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Encyclopedia > List of elements by atomic number

A table of chemical elements ordered by atomic number and color coded according to type of element. Each element's name, element symbol, group and period, atomic mass (or most stable isotope), density, melting point, boiling point and discoverer are given. A chemical element, often called simply element, is a chemical substance that cannot be decomposed or transformed into other chemical substances by ordinary chemical methods. ... In chemistry and physics, the atomic number (Z) is the number of protons found in the nucleus of an atom. ... A chemical symbol is an abbreviation or short representation of the name of a chemical element. ... A periodic table group is a vertical column in the periodic table of the chemical elements. ... In the periodic table of the elements, a period is a row of the table. ... The atomic mass of a chemical element is the mass of an atom at rest, most often expressed in unified atomic mass units. ... Isotopes are forms of an element, therefore their nuclei have the same atomic number — the number of protons in the nucleus — but different mass numbers because they contain different numbers of neutrons. ... Density (symbol: ρ - Greek: rho) is a measure of mass per unit of volume. ... The melting point of a solid is the temperature at which it changes state from solid to liquid. ... The boiling point of a substance is the temperature at which it can change its state from a liquid to a gas throughout the bulk of the liquid at a given pressure. ...

Chemical series of the periodic table
Alkali metals Alkaline earth metals Lanthanides Actinides Transition metals
Poor metals Metalloids Nonmetals Halogens Noble gases
No. Name Symbol Period,
Group		 Mass
(g/mol)		 Density
(g/cm³)
at 20°C		 Melting
p. (°C)		 Boiling
p. (°C)		 Year of
discovery		 Discoverer
1 Hydrogen H 1, 1 1.00794(7)2 3 4 0.084 g/l -259.1 -252.9 1766 Cavendish
2 Helium He 1, 18 4.002602(2)2 4 0.17 g/l -272.2 (at 2.5 MPa) -268.9 1895 Ramsay and Cleve
3 Lithium Li 2, 1 6.941(2)2 3 4 5 0.53 180.5 1317 1817 Arfwedson
4 Beryllium Be 2, 2 9.012182(3) 1.85 1278 2970 1797 Vauquelin
5 Boron B 2, 13 10.811(7)2 3 4 2.46 2300 2550 1808 Davy and Gay-Lussac
6 Carbon C 2, 14 12.0107(8)2 4 3.51 3550 4827 prehistoric unknown
7 Nitrogen N 2, 15 14.0067(2)2 4 1.17 g/l -209.9 -195.8 1772 Rutherford
8 Oxygen O 2, 16 15.9994(3)2 4 1.33 g/l -218.4 -182.9 1774 Priestly and Scheele
9 Fluorine F 2, 17 18.9984032(5) 1.58 g/l -219.6 -188.1 1886 Moissan
10 Neon Ne 2, 18 20.1797(6)2 3 0.84 g/l -248.7 -246.1 1898 Ramsay and Travers
11 Sodium Na 3, 1 22.98976928(2) 0.97 97.8 892 1807 Davy
12 Magnesium Mg 3, 2 24.3050(6) 1.74 648.8 1107 1755 Black
13 Aluminium Al 3, 13 26.9815386(8) 2.70 660.5 2467 1825 Oersted
14 Silicon Si 3, 14 28.0855(3)4 2.33 1410 2355 1824 Berzelius
15 Phosphorus P 3, 15 30.973762(2) 1.82 44 (P4) 280 (P4) 1669 Brand
16 Sulfur S 3, 16 32.065(5)2 4 2.06 113 444.7 prehistoric unknown
17 Chlorine Cl 3, 17 35.453(2)2 3 4 2.95 g/l -34.6 -101 1774 Scheele
18 Argon Ar 3, 18 39.948(1)2 4 1.66 g/l -189.4 -185.9 1894 Ramsay and Rayleigh
19 Potassium K 4, 1 39.0983(1) 0.86 63.7 774 1807 Davy
20 Calcium Ca 4, 2 40.078(4)2 1.54 839 1487 1808 Davy
21 Scandium Sc 4, 3 44.955912(6) 2.99 1539 2832 1879 Nilson
22 Titanium Ti 4, 4 47.867(1) 4.51 1660 3260 1791 Gregor and Klaproth
23 Vanadium V 4, 5 50.9415(1) 6.09 1890 3380 1801 del Río
24 Chromium Cr 4, 6 51.9961(6) 7.14 1857 2482 1797 Vauquelin
25 Manganese Mn 4, 7 54.938045(5) 7.44 1244 2097 1774 Gahn
26 Iron Fe 4, 8 55.845(2) 7.87 1535 2750 prehistoric unknown
27 Cobalt Co 4, 9 58.933195(5) 8.89 1495 2870 1735 Brandt
28 Nickel Ni 4, 10 58.6934(2) 8.91 1453 2732 1751 Cronstedt
29 Copper Cu 4, 11 63.546(3)4 8.92 1083.5 2595 prehistoric unknown
30 Zinc Zn 4, 12 65.409(4) 7.14 419.6 907 prehistoric unknown
31 Gallium Ga 4, 13 69.723(1) 5.91 29.8 2403 1875 Lecoq de Boisbaudran
32 Germanium Ge 4, 14 72.64(1) 5.32 937.4 2830 1886 Winkler
33 Arsenic As 4, 15 74.92160(2) 5.72 613 613
(subl.)		 ca. 1250 Albertus Magnus
34 Selenium Se 4, 16 78.96(3)4 4.82 217 685 1817 Berzelius
35 Bromine Br 4, 17 79.904(1) 3.14 -7.3 58.8 1826 Balard
36 Krypton Kr 4, 18 83.798(2)2 3 3.48 g/l -156.6 -152.3 1898 Ramsay and Travers
37 Rubidium Rb 5, 1 85.4678(3)2 1.53 39 688 1861 Bunsen and Kirchhoff
38 Strontium Sr 5, 2 87.62(1)2 4 2.63 769 1384 1790 Crawford
39 Yttrium Y 5, 3 88.90585(2) 4.47 1523 3337 1794 Gadolin
40 Zirconium Zr 5, 4 91.224(2)2 6.51 1852 4377 1789 Klaproth
41 Niobium Nb 5, 5 92.906 38(2) 8.58 2468 4927 1801 Hatchett
42 Molybdenum Mo 5, 6 95.94(2)2 10.28 2617 5560 1778 Scheele
43 Technetium Tc 5, 7 [98.9063]1 11.49 2172 5030 1937 Perrier and Segrè
44 Ruthenium Ru 5, 8 101.07(2)2 12.45 2310 3900 1844 Klaus
45 Rhodium Rh 5, 9 102.90550(2) 12.41 1966 3727 1803 Wollaston
46 Palladium Pd 5, 10 106.42(1)2 12.02 1552 3140 1803 Wollaston
47 Silver Ag 5, 11 107.8682(2)2 10.49 961.9 2212 prehistoric unknown
48 Cadmium Cd 5, 12 112.411(8)2 8.64 321 765 1817 Strohmeyer and Hermann
49 Indium In 5, 13 114.818(3) 7.31 156.2 2080 1863 Reich and Richter
50 Tin Sn 5, 14 118.710(7)2 7.29 232 2270 prehistoric unknown
51 Antimony Sb 5, 15 121.760(1)2 6.69 630.7 1750 prehistoric unknown
52 Tellurium Te 5, 16 127.60(3)2 6.25 449.6 990 1782 von Reichenstein
53 Iodine I 5, 17 126.90447(3) 4.94 113.5 184.4 1811 Courtois
54 Xenon Xe 5, 18 131.293(6)2 3 4.49 g/l -111.9 -107 1898 Ramsay and Travers
55 Caesium Cs 6, 1 132.9054519(2) 1.90 28.4 690 1860 Kirchhoff and Bunsen
56 Barium Ba 6, 2 137.327(7) 3.65 725 1640 1808 Davy
57 Lanthanum La 6 138.90547(7)2 6.16 920 3454 1839 Mosander
58 Cerium Ce 6 140.116(1)2 6.77 798 3257 1803 von Hisinger and Berzelius
59 Praseodymium Pr 6 140.90765(2) 6.48 931 3212 1895 von Welsbach
60 Neodymium Nd 6 144.242(3)2 7.00 1010 3127 1895 von Welsbach
61 Promethium Pm 6 [146.9151]1 7.22 1080 2730 1945 Marinsky and Glendenin
62 Samarium Sm 6 150.36(2)2 7.54 1072 1778 1879 Lecoq de Boisbaudran
63 Europium Eu 6 151.964(1)2 5.25 822 1597 1901 Demarçay
64 Gadolinium Gd 6 157.25(3)2 7.89 1311 3233 1880 de Marignac
65 Terbium Tb 6 158.92535(2) 8.25 1360 3041 1843 Mosander
66 Dysprosium Dy 6 162.500(1)2 8.56 1409 2335 1886 Lecoq de Boisbaudran
67 Holmium Ho 6 164.93032(2) 8.78 1470 2720 1878 Soret
68 Erbium Er 6 167.259(3)2 9.05 1522 2510 1842 Mosander
69 Thulium Tm 6 168.93421(2) 9.32 1545 1727 1879 Cleve
70 Ytterbium Yb 6 173.04(3)2 6.97 824 1193 1878 de Marignac
71 Lutetium Lu 6, 3 174.967(1)2 9.84 1656 3315 1907 Urbain
72 Hafnium Hf 6, 4 178.49(2) 13.31 2150 5400 1923 Coster and de Hevesy
73 Tantalum Ta 6, 5 180.9479(1) 16.68 2996 5425 1802 Ekeberg
74 Tungsten W 6, 6 183.84(1) 19.26 3407 5927 1783 Elhuyar
75 Rhenium Re 6, 7 186.207(1) 21.03 3180 5627 1925 Noddack, Tacke and Berg
76 Osmium Os 6, 8 190.23(3)2 22.61 3045 5027 1803 Tennant
77 Iridium Ir 6, 9 192.217(3) 22.65 2410 4130 1803 Tennant
78 Platinum Pt 6, 10 195.084(9) 21.45 1772 3827 1557 Scaliger
79 Gold Au 6, 11 196.966569(4) 19.32 1064.4 2940 prehistoric unknown
80 Mercury Hg 6, 12 200.59(2) 13.55 -38.9 356.6 prehistoric unknown
81 Thallium Tl 6, 13 204.3833(2) 11.85 303.6 1457 1861 Crookes
82 Lead Pb 6, 14 207.2(1)2 4 11.34 327.5 1740 prehistoric unknown
83 Bismuth Bi 6, 15 208.98040(1) 9.80 271.4 1560 1540 Geoffroy
84 Polonium Po 6, 16 [208.9824]1 9.20 254 962 1898 Marie and Pierre Curie
85 Astatine At 6, 17 [209.9871]1 302 337 1940 Corson and MacKenzie
86 Radon Rn 6, 18 [222.0176]1 9.23 g/l -71 -61.8 1900 Dorn
87 Francium Fr 7, 1 [223.0197]1 27 677 1939 Perey
88 Radium Ra 7, 2 [226.0254]1 5.50 700 1140 1898 Marie and Pierre Curie
89 Actinium Ac 7 [227.0278]1 10.07 1047 3197 1899 Debierne
90 Thorium Th 7 232.03806(2)1 2 11.72 1750 4787 1829 Berzelius
91 Protactinium Pa 7 231.03588(2)1 15.37 1554 4030 1917 Soddy, Cranston and Hahn
92 Uranium U 7 238.02891(3)1 2 3 18.97 1132.4 3818 1789 Klaproth
93 Neptunium Np 7 [237.0482]1 20.48 640 3902 1940 McMillan and Abelson
94 Plutonium Pu 7 [244.0642]1 19.74 641 3327 1940 Seaborg
95 Americium Am 7 [243.0614]1 13.67 994 2607 1944 Seaborg
96 Curium Cm 7 [247.0703]1 13.51 1340 1944 Seaborg
97 Berkelium Bk 7 [247.0703]1 13.25 986 1949 Seaborg
98 Californium Cf 7 [251.0796]1 15.1 900 1950 Seaborg
99 Einsteinium Es 7 [252.0829]1 860 1952 Seaborg
100 Fermium Fm 7 [257.0951]1 1952 Seaborg
101 Mendelevium Md 7 [258.0986]1 1955 Seaborg
102 Nobelium No 7 [259.1009]1 1958 Seaborg
103 Lawrencium Lr 7, 3 [260.1053]1 1961 Ghiorso
104 Rutherfordium Rf 7, 4 [261.1087]1 1964/69 Flerov
105 Dubnium Db 7, 5 [262.1138]1 1967/70 Flerov
106 Seaborgium Sg 7, 6 [263.1182]1 1974 Flerov
107 Bohrium Bh 7, 7 [262.1229]1 1976 Oganessian
108 Hassium Hs 7, 8 [265]1 1984 GSI (*)
109 Meitnerium Mt 7, 9 [266]1 1982 GSI
110 Darmstadtium Ds 7, 10 [269]1 1994 GSI
111 Roentgenium Rg 7, 11 [272]1 1994 GSI
112 Ununbium Uub 7, 12 [285]1 1996 GSI
113 Ununtrium Uut 7, 13 [284]1 2004 JINR (*), LLNL (*)
114 Ununquadium Uuq 7, 14 [289]1 1999 JINR
115 Ununpentium Uup 7, 15 [288]1 2004 JINR, LLNL
116 Ununhexium Uuh 7, 16 [292]1 1999 LBNL (*)
117 Ununseptium Uus 7, 17 1 undiscovered
118 Ununoctium Uuo 7, 18 1 undiscovered
Chemical series of the periodic table
Alkali metals Alkaline earth metals Lanthanides Actinides Transition metals
Poor metals Metalloids Nonmetals Halogens Noble gases

sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex... The periodic table of the chemical elements is a tabular method of displaying the chemical elements, first devised in 1869 by the Russian chemist Dmitri Mendeleev. ... The alkali metals are the series of elements in Group 1 (IUPAC style) of the periodic table (excluding hydrogen in all but one rare circumstance): lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr). ... The alkaline earth metals are the series of elements in Group 2 (IUPAC style) of the periodic table: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba) and radium (Ra) (not always considered due to its radioactivity and very short half-life). ... The lanthanide series comprises the 15 elements from lanthanum to lutetium on the periodic table, with atomic numbers 57 through 71. ... The actinide series encompasses the 15 chemical elements that lie between actinium and lawrencium on the periodic table with atomic numbers 89 - 103. ... In chemistry, the term transition metal (sometimes also called a transition element) has two possible meanings: It commonly refers to any element in the d-block of the periodic table, including zinc, cadmium and mercury. ... The poor metals or post-transition metals are the metallic elements of the p-block of the periodic table, occurring between the metalloids and the transition metals. ... Together with the metals and nonmetals, the metalloids (in Greek metallon = metal and eidos = sort - also called semimetals) form one of the three categories of chemical elements as classified by ionization and bonding properties. ... Together with the metals and metalloids, a nonmetal is one of three categories of chemical elements as distinguished by ionisation and bonding properties. ... The halogens The halogens are a chemical series. ... For the musical band, see Noble Gas (band) The noble gases are the chemical elements in group 18 (old-style Group 0) of the periodic table. ... This is a list of chemical elements, sorted by name and color coded according to type of element. ... Hydrogen = 1 List of Elements in Atomic Number Order. ... The gram or gramme, symbol g, is a unit of mass. ... The mole and its simple conversions into different units of measurements. ... This is a list of the chemical elements, sorted by density measured at standard temperature and pressure. ... A cubic centimetre (cm3) is an SI derived unit of volume, equal to the volume of a cube with side length of 1 centi metre. ... A degree Celsius (°C) is a unit of temperature named after the Swedish astronomer Anders Celsius (1701-1744), who first proposed a similar system in 1742. ... This is a list of the chemical elements, sorted by melting point measured at normal pressure. ... This is a list of the chemical elements, sorted by boiling point measured at normal pressure. ... General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ... Henry Cavendish (October 10, 1731 - February 24, 1810) was a British scientist. ... General Name, Symbol, Number helium, He, 2 Chemical series noble gases Group, Period, Block 18, 1, s Appearance colorless Atomic mass 4. ... William Ramsay. ... Per Teodor Cleve (Stockholm February 10, 1840 – Uppsala June 18, 1905) was a Swedish chemist and geologist. ... General Name, Symbol, Number lithium, Li, 3 Chemical series alkali metals Group, Period, Block 1, 2, s Appearance silvery white/gray Atomic mass 6. ... Johan August Arfwedson (January 12, 1792 - October 28, 1841), Swedish chemist and the discoverer of lithium (1817). ... General Name, Symbol, Number beryllium, Be, 4 Chemical series alkaline earth metals Group, Period, Block 2, 2, s Appearance white-gray metallic Atomic mass 9. ... Louis Nicolas Vauquelin. ... General Name, Symbol, Number boron, B, 5 Chemical series metalloids Group, Period, Block 13, 2, p Appearance black/brown Atomic mass 10. ... Sir Humphry Davy. ... Joseph Louis Gay-Lussac. ... General Name, Symbol, Number carbon, C, 6 Chemical series nonmetals Group, Period, Block 14, 2, p Appearance black (graphite) colorless (diamond) Atomic mass 12. ... General Name, Symbol, Number nitrogen, N, 7 Chemical series nonmetals Group, Period, Block 15, 2, p Appearance colorless Atomic mass 14. ... Daniel Rutherford, (November 3, 1749 – November 15, 1819), was a Scottish chemist and physician who was most famous for the discovery of nitrogen in 1772. ... General Name, Symbol, Number oxygen, O, 8 Chemical series Nonmetals, chalcogens Group, Period, Block 16, 2, p Appearance colorless Atomic mass 15. ... Joseph Priestley (March 13, 1733 - February 6, 1804) was an English chemist, dissenting clergyman, and educator. ... Carl Wilhelm Scheele Scheeles house with his pharmacy in Köping. ... General Name, Symbol, Number fluorine, F, 9 Chemical series halogens Group, Period, Block 17, 2, p Appearance pale greenish-yellow gas Atomic mass 18. ... The French chemist Henri Moissan (1852--1907) won the 1906 Nobel Prize in Chemistry for his work in isolating fluorine from its compounds. ... General Name, Symbol, Number neon, Ne, 10 Chemical series noble gases Group, Period, Block 18, 2, p Appearance colorless Atomic mass 20. ... William Ramsay. ... Morris Travers (1872-1961) was an English chemist who discovered xenon with Sir William Ramsay. ... General Name, Symbol, Number sodium, Na, 11 Chemical series alkali metals Group, Period, Block 1, 3, s Appearance silvery white Atomic mass 22. ... Sir Humphry Davy. ... General Name, Symbol, Number magnesium, Mg, 12 Chemical series alkaline earth metals Group, Period, Block 2, 3, s Appearance silvery white Atomic mass 24. ... Joseph Black Joseph Black (April 16, 1728 - November 10, 1799) was a Scottish physicist and chemist. ... General Name, Symbol, Number aluminium, Al, 13 Chemical series poor metals Group, Period, Block 13, 3, p Appearance silvery Atomic mass 26. ... Hans Christian Ørsted Hans Christian Ørsted (August 14, 1777 in Rudkøbing – March 9, 1851 in Copenhagen) was a Danish physicist and chemist, influenced by the thinking of Immanuel Kant. ... General Name, Symbol, Number silicon, Si, 14 Chemical series metalloids Group, Period, Block 14, 3, p Appearance dark gray, bluish tinge Atomic mass 28. ... Jöns Jakob Berzelius Statue of Berzelius in the centre of Berzelii Park, Stockholm Jöns Jakob Berzelius (August 20, 1779 - August 7, 1848) was a Swedish chemist. ... This article is about the chemical element. ... The Alchemist in Search of the Philosophers Stone (1771) by Joseph Wright depicting Henning Brand discovering phosphorus (the glow shown is exaggerated) Henning Brand (c. ... General Name, Symbol, Number sulfur, S, 16 Chemical series nonmetals Group, Period, Block 16, 3, p Appearance lemon yellow Atomic mass 32. ... General Name, Symbol, Number chlorine, Cl, 17 Chemical series halogens Group, Period, Block 17, 3, p Appearance yellowish green Atomic mass 35. ... Carl Wilhelm Scheele Scheeles house with his pharmacy in Köping. ... General Name, Symbol, Number argon, Ar, 18 Chemical series noble gases Group, Period, Block 18, 3, p Appearance colorless Atomic mass 39. ... William Ramsay. ... Lord Rayleigh The Right Honourable John William Strutt, 3rd Baron Rayleigh (aka Lord Rayleigh) (12 November 1842 – 30 June 1919) was a British physicist who (with William Ramsay) discovered the element argon, an achievement that earned him the Nobel Prize for Physics in 1904. ... General Name, Symbol, Number potassium, K, 19 Chemical series alkali metals Group, Period, Block 1, 4, s Appearance silvery white Atomic mass 39. ... Sir Humphry Davy. ... General Name, Symbol, Number calcium, Ca, 20 Chemical series alkaline earth metals Group, Period, Block 2, 4, s Appearance silvery white Atomic mass 40. ... Sir Humphry Davy. ... General Name, Symbol, Number scandium, Sc, 21 Chemical series transition metals Group, Period, Block 3, 4, d Appearance silvery white Atomic mass 44. ... General Name, Symbol, Number titanium, Ti, 22 Chemical series transition metals Group, Period, Block 4, 4, d Appearance silvery metallic Atomic mass 47. ... William Gregor (25 December 1761 - 11 June 1817) was the English clergyman and mineralogist who discovered the elemental metal titanium. ... Martin Heinrich Klaproth Martin Heinrich Klaproth (December 1, 1743 – January 1, 1817) was a German chemist. ... General Name, Symbol, Number vanadium, V, 23 Chemical series transition metals Group, Period, Block 5, 4, d Appearance gray-white metal Atomic mass 50. ... Andrés Manuel Del Río (10 November 1764—23 March 1849) was a Mexican chemist who discovered vanadium (as vanadinite) in 1801. ... General Name, Symbol, Number chromium, Cr, 24 Chemical series transition metals Group, Period, Block 6, 4, d Appearance silvery metallic Atomic mass 51. ... Louis Nicolas Vauquelin. ... General Name, Symbol, Number manganese, Mn, 25 Chemical series transition metals Group, Period, Block 7, 4, d Appearance silvery metallic Atomic mass 54. ... Johan Gottlieb Gahn discovered manganese in 1774. ... General Name, Symbol, Number iron, Fe, 26 Chemical series transition metals Group, Period, Block 8, 4, d Appearance lustrous metallic with a grayish tinge Atomic mass 55. ... General Name, Symbol, Number cobalt, Co, 27 Chemical series transition metals Group, Period, Block 9, 4, d Appearance metallic with gray tinge Atomic mass 58. ... Georg Brandt (b. ... General Name, Symbol, Number nickel, Ni, 28 Chemical series transition metals Group, Period, Block 10, 4, d Appearance lustrous, metallic Atomic mass 58. ... Baron Axel Fredrik Cronstedt (1722-1765) was a Swedish chemist who discovered nickel in 1751. ... General Name, Symbol, Number copper, Cu, 29 Chemical series transition metals Group, Period, Block 11, 4, d Appearance metallic brown Atomic mass 63. ... General Name, Symbol, Number zinc, Zn, 30 Chemical series transition metals Group, Period, Block 12, 4, d Appearance bluish pale gray Atomic mass 65. ... General Name, Symbol, Number gallium, Ga, 31 Chemical series poor metals Group, Period, Block 13, 4, p Appearance silvery white   Atomic mass 69. ... Paul Émile (François) Lecoq de Boisbaudran (April 18, 1838 - May 28, 1912) was a French chemist born in Cognac. ... General Name, Symbol, Number germanium, Ge, 32 Chemical series metalloids Group, Period, Block 14, 4, p Appearance grayish white Atomic mass 72. ... Clemens Alexander Winkler (1838-1904), a German chemist, discovered the element Germanium in 1886. ... General Name, Symbol, Number arsenic, As, 33 Chemical series metalloids Group, Period, Block 15, 4, p Appearance metallic gray Atomic mass 74. ... Sublimation of an element or substance is a conversion between the solid and the gaseous phases of matter, with no intermediate liquid stage. ... Albertus Magnus (fresco, 1352, Treviso, Italy) Albertus Magnus (1193? – November 15, 1280), also known as Saint Albert the Great and Albert of Cologne, was a Dominican friar who became famous for his universal knowledge and advocacy for the peaceful coexistence of science and religion. ... SE redirects here. ... Jöns Jakob Berzelius Statue of Berzelius in the centre of Berzelii Park, Stockholm Jöns Jakob Berzelius (August 20, 1779 - August 7, 1848) was a Swedish chemist. ... General Name, Symbol, Number bromine, Br, 35 Chemical series halogens Group, Period, Block 17, 4, p Appearance gas/liquid: red-brown solid: metallic luster Atomic mass 79. ... Antoine Jérôme Balard (September 30, 1802 - April 30, 1876), was a French chemist, and the discoverer of bromine. ... General Name, Symbol, Number krypton, Kr, 36 Chemical series noble gases Group, Period, Block 18, 4, p Appearance colorless Atomic mass 83. ... William Ramsay. ... Morris Travers (1872-1961) was an English chemist who discovered xenon with Sir William Ramsay. ... General Name, Symbol, Number rubidium, Rb, 37 Chemical series alkali metals Group, Period, Block 1, 5, s Appearance grey white Atomic mass 85. ... Robert Bunsen Robert Wilhelm Bunsen (31 March 1811 – 16 August 1899) was a German chemist. ... Gustav Kirchhoff Gustav Robert Kirchhoff (March 12, 1824 – October 17, 1887), a German physicist who contributed to the fundamental understanding of electrical circuits, spectroscopy, and the emission of black-body radiation by heated objects. ... General Name, Symbol, Number strontium, Sr, 38 Chemical series alkaline earth metals Group, Period, Block 2, 5, s Appearance silvery white metallic Atomic mass 87. ... Responsible for discovering the element strontium in 1790. ... General Name, Symbol, Number yttrium, Y, 39 Chemical series transition metals Group, Period, Block 3, 5, d Appearance silvery white Atomic mass 88. ... Johan Gadolin Johan Gadolin (June 5, 1760 — August 15, 1852) was a Finnish chemist, physicist and mineralogist. ... General Name, Symbol, Number zirconium, Zr, 40 Chemical series transition metals Group, Period, Block 4, 5, d Appearance silvery white Atomic mass 91. ... Martin Heinrich Klaproth Martin Heinrich Klaproth (December 1, 1743 – January 1, 1817) was a German chemist. ... General Name, Symbol, Number niobium, Nb, 41 Chemical series transition metals Group, Period, Block 5, 5, d Appearance gray metallic Atomic mass 92. ... Charles Hatchett Charles Hatchett (February 1, 1765 _ October 3, 1847) was an English chemist who discovered the element niobium. ... General Name, Symbol, Number molybdenum, Mo, 42 Chemical series transition metals Group, Period, Block 6, 5, d Appearance gray metallic Atomic mass 95. ... Carl Wilhelm Scheele Scheeles house with his pharmacy in Köping. ... General Name, Symbol, Number technetium, Tc, 43 Chemical series transition metals Group, Period, Block 7, 5, d Appearance silvery gray metal Atomic mass [98](0) g/mol Electron configuration [Kr] 4d5 5s2 Electrons per shell 2, 8, 18, 13, 2 Physical properties Phase solid Density (near r. ... Portrait of Dr. Emilio Segre Emilio Gino Segrè (February 1, 1905 - April 22, 1989) was an Italian American physicist who, with Owen Chamberlain, won the 1959 Nobel Prize in Physics for their discovery of the antiproton. ... General Name, Symbol, Number ruthenium, Ru, 44 Chemical series transition metals Group, Period, Block 8, 5, d Appearance silvery white metallic Atomic mass 101. ... Karl Klaus Karl Klaus (22 January 1796 – 24 March 1864) was a Russian chemist, professor at Kazan State University, and discoverer of ruthenium. ... Rh redirects here. ... William Hyde Wollaston (August 6, 1766 – December 22, 1828) was an English chemist who is famous for discovering two chemical elements and for developing a way to process platinum ore. ... General Name, Symbol, Number palladium, Pd, 46 Chemical series transition metals Group, Period, Block 10, 5, d Appearance silvery white metallic Atomic mass 106. ... William Hyde Wollaston (August 6, 1766 – December 22, 1828) was an English chemist who is famous for discovering two chemical elements and for developing a way to process platinum ore. ... General Name, Symbol, Number silver, Ag, 47 Chemical series transition metals Group, Period, Block 11, 5, d Appearance lustrous white metal Atomic mass 107. ... General Name, Symbol, Number cadmium, Cd, 48 Chemical series transition metals Group, Period, Block 12, 5, d Appearance silvery gray metallic Atomic mass 112. ... Friedrich Stromeyer (1776 - 1835) was a German chemist. ... Karl Samuel Leberecht Hermann (died 1846) was a German chemist who independently discovered cadmium in 1817 Categories: Substubs | German chemists | Discoverer of a chemical element | 1846 deaths ... General Name, Symbol, Number indium, In, 49 Chemical series poor metals Group, Period, Block 13, 5, p Appearance silvery lustrous gray Atomic mass 114. ... Ferdinand Reich (1799-1882) was a German chemist who co-discovered indium in 1863 with Hieronymous Theodor Richter (1824-1898). ... Hieronymous Theodor Richter (1824-1898) was a German chemist who co-discovered indium in 1863 with Ferdinand Reich. ... General Name, Symbol, Number tin, Sn, 50 Chemical series poor metals Group, Period, Block 14, 5, p Appearance silvery lustrous gray Atomic mass 118. ... General Name, Symbol, Number antimony, Sb, 51 Chemical series metalloids Group, Period, Block 15, 5, p Appearance silvery lustrous grey Atomic mass 121. ... General Name, Symbol, Number tellurium, Te, 52 Chemical series metalloids Group, Period, Block 16, 5, p Appearance silvery lustrous gray Atomic mass 127. ... Baron Franz-Joseph Müller von Reichenstein discovered Tellurium in 1782. ... General Name, Symbol, Number iodine, I, 53 Chemical series halogens Group, Period, Block 17, 5, p Appearance violet-dark gray, lustrous Atomic mass 126. ... Bernard Courtois, also spelled Barnard Courtois, (8 February 1777–27 September 1838) was a French chemist who discovered iodine in 1811. ... General Name, Symbol, Number xenon, Xe, 54 Chemical series noble gases Group, Period, Block 18, 5, p Appearance colorless Atomic mass 131. ... William Ramsay. ... Morris Travers (1872-1961) was an English chemist who discovered xenon with Sir William Ramsay. ... General Name, Symbol, Number caesium, Cs, 55 Chemical series alkali metals Group, Period, Block 1, 6, s Appearance silvery gold Atomic mass 132. ... Gustav Kirchhoff Gustav Robert Kirchhoff (March 12, 1824 – October 17, 1887), a German physicist who contributed to the fundamental understanding of electrical circuits, spectroscopy, and the emission of black-body radiation by heated objects. ... Robert Bunsen Robert Wilhelm Bunsen (31 March 1811 – 16 August 1899) was a German chemist. ... General Name, Symbol, Number barium, Ba, 56 Chemical series alkaline earth metals Group, Period, Block 2, 6, s Appearance silvery white Atomic mass 137. ... Sir Humphry Davy. ... General Name, Symbol, Number lanthanum, La, 57 Chemical series lanthanides Group, Period, Block 3, 6, f Appearance silvery white Atomic mass 138. ... Carl Gustaf Mosander (Kalmar 10 September 1797 – Lovö, Stockholm County 15 October Swedish chemist. ... General Name, Symbol, Number cerium, Ce, 58 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Atomic mass 140. ... Jöns Jakob Berzelius Statue of Berzelius in the centre of Berzelii Park, Stockholm Jöns Jakob Berzelius (August 20, 1779 - August 7, 1848) was a Swedish chemist. ... For other meanings of the abbreviation Pr or PR, see Pr and PR. General Name, Symbol, Number praseodymium, Pr, 59 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white, yellowish tinge Atomic mass 140. ... Carl Auer von Welsbach ( 9 September 1858 - 8 April 1929) was an Austrian scientist and inventor who had a talent for not only discovering advances, but turning them into commercially successful products. ... General Name, Symbol, Number neodymium, Nd, 60 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white, yellowish tinge Atomic mass 144. ... Carl Auer von Welsbach ( 9 September 1858 - 8 April 1929) was an Austrian scientist and inventor who had a talent for not only discovering advances, but turning them into commercially successful products. ... General Name, Symbol, Number promethium, Pm, 61 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance metallic Atomic mass [145](0) g/mol Electron configuration [Xe] 4f5 6s2 Electrons per shell 2, 8, 18, 23, 8, 2 Physical properties Phase solid Density (near r. ... Jacob A. Marinsky (1918 – September 1, 2005) was a chemist and writer who was the co-discoverer of the element promethium in 1944. ... General Name, Symbol, Number samarium, Sm, 62 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Atomic mass 150. ... Paul Émile (François) Lecoq de Boisbaudran (April 18, 1838 - May 28, 1912) was a French chemist born in Cognac. ... General Name, Symbol, Number europium, Eu, 63 Chemical series lanthanides Group, Period, Block ?, 6, f Appearance silvery white Atomic mass 151. ... Eugène-Antole Demarçay (January 1, 1852 - December, 1904) was a French chemist. ... General Name, Symbol, Number gadolinium, Gd, 64 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Atomic mass 157. ... Jean Charles Galinard de Marignac (April 24, 1817–April 15, 1894) was a Swiss chemist whose work with atomic weights suggested the possibility of isotopes and the packing fraction of nuclei and whose study of the rare earth elements led to his discovery of ytterbium in 1878 and codiscovery of... General Name, Symbol, Number terbium, Tb, 65 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Atomic mass 158. ... Carl Gustaf Mosander (Kalmar 10 September 1797 – Lovö, Stockholm County 15 October Swedish chemist. ... General Name, Symbol, Number dysprosium, Dy, 66 Chemical series lanthanides Group, Period, Block ?, 6, f Appearance silvery white Atomic mass 162. ... Paul Émile (François) Lecoq de Boisbaudran (April 18, 1838 - May 28, 1912) was a French chemist born in Cognac. ... General Name, Symbol, Number holmium, Ho, 67 Chemical series lanthanides Group, Period, Block ?, 6, f Appearance silvery white Atomic mass 164. ... General Name, Symbol, Number erbium, Er, 68 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Atomic mass 167. ... Carl Gustaf Mosander (Kalmar 10 September 1797 – Lovö, Stockholm County 15 October Swedish chemist. ... General Name, Symbol, Number thulium, Tm, 69 Chemical series lanthanides Group, Period, Block ?, 6, f Appearance silvery gray Atomic mass 168. ... Per Teodor Cleve (Stockholm February 10, 1840 – Uppsala June 18, 1905) was a Swedish chemist and geologist. ... General Name, Symbol, Number ytterbium, Yb, 70 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Atomic mass 173. ... Jean Charles Galinard de Marignac (April 24, 1817–April 15, 1894) was a Swiss chemist whose work with atomic weights suggested the possibility of isotopes and the packing fraction of nuclei and whose study of the rare earth elements led to his discovery of ytterbium in 1878 and codiscovery of... General Name, Symbol, Number lutetium, Lu, 71 Chemical series lanthanides Group, Period, Block n/a, 6, d Appearance silvery white Atomic mass 174. ... General Name, Symbol, Number hafnium, Hf, 72 Chemical series transition metals Group, Period, Block 4, 6, d Appearance gray steel Atomic mass 178. ... This article contains information that has not been verified. ... George Charles de Hevesy (born as Hevesy György, also known as Georg Karl von Hevesy) (August 1, 1885 in Budapest – July 5, 1966) was a Hungarian chemist who was important in the development of the tracer method where radioactive tracers are used to study chemical processes, e. ... General Name, Symbol, Number tantalum, Ta, 73 Chemical series transition metals Group, Period, Block 5, 6, d Appearance gray blue Atomic mass 180. ... Anders Gustaf Ekeberg (1767-1813) was a Swedish chemist who discovered tantalum in 1802 Categories: People stubs | Discoverer of a chemical element | Swedish chemists | 1767 births | 1813 deaths ... General Name, Symbol, Number tungsten, W, 74 Chemical series transition metals Group, Period, Block 6, 6, d Appearance grayish white, lustrous Atomic mass 183. ... Fausto Elhuyar was the joint discoverer of tungsten with his brother Juan José Elhuyar This article is a substub, the first step on the way to becoming a full article. ... General Name, Symbol, Number rhenium, Re, 75 Chemical series transition metals Group, Period, Block 7, 6, d Appearance grayish white Atomic mass 186. ... Walter Noddack (* 17 August 1893 in Berlin, 7 December 1960 in Berlin) was a German chemist. ... Ida Noddack Tacke (25 February 1896 in Wesel - 1978) was a German chemist and physicist. ... General Name, Symbol, Number osmium, Os, 76 Chemical series transition metals Group, Period, Block 8, 6, d Appearance silvery, blue cast Atomic mass 190. ... Smithson Tennant (November 30, 1761 - February 22, 1815) was an English chemist. ... General Name, Symbol, Number iridium, Ir, 77 Chemical series transition metals Group, Period, Block 9, 6, d Appearance silvery white Atomic mass 192. ... Smithson Tennant (November 30, 1761 - February 22, 1815) was an English chemist. ... General Name, Symbol, Number platinum, Pt, 78 Chemical series transition metals Group, Period, Block 10, 6, d Appearance grayish white Atomic mass 195. ... Julius Caesar Scaliger (1484-1558), humanist scholar. ... General Name, Symbol, Number gold, Au, 79 Chemical series transition metals Group, Period, Block 11, 6, d Appearance metallic yellow Atomic mass 196. ... General Name, Symbol, Number mercury, Hg, 80 Chemical series transition metals Group, Period, Block 12, 6, d Appearance silvery white Atomic mass 200. ... General Name, Symbol, Number thallium, Tl, 81 Chemical series poor metals Group, Period, Block 13, 6, p Appearance silvery white Atomic mass 204. ... Sir William Crookes, OM , FRS (June 17, 1832 – April 4, 1919) was an English chemist and physicist. ... General Name, Symbol, Number lead, Pb, 82 Chemical series poor metals Group, Period, Block 14, 6, p Appearance bluish white Atomic mass 207. ... General Name, Symbol, Number bismuth, Bi, 83 Chemical series poor metals Group, Period, Block 15, 6, p Appearance lustrous reddish white Atomic mass 208. ... Claude Geoffroy le Jeune (Claude Geoffroy the younger), sometimes given as Claude Geoffroy le jeune, discovered Bismuth in 1753. ... General Name, Symbol, Number polonium, Po, 84 Chemical series metalloids Group, Period, Block 16, 6, p Appearance silvery Atomic mass (209) g/mol Electron configuration [Xe] 4f14 5d10 6s2 6p4 Electrons per shell 2, 8, 18, 32, 18, 6 Physical properties Phase solid Density (near r. ... Maria SkÅ‚odowska-Curie, the only person to win two Science Nobel Prizes in different fields, was one of the most significant researchers of radiation and its effects. ... Pierre Curie Pierre Curie (May 15, 1859, Paris – April 19, 1906, Paris) was a French physicist and a pioneer in the study of crystallography, magnetism, piezoelectricity and radioactivity. ... General Name, Symbol, Number astatine, At, 85 Chemical series halogens Group, Period, Block 17, 6, p Appearance metallic Atomic mass (210) g/mol Electron configuration [Xe] 4f14 5d10 6s2 6p5 Electrons per shell 2, 8, 18, 32, 18, 7 Physical properties Phase solid Melting point 575 K (302 °C, 576... Dale R. Corson (born 1914) is an U.S. educator. ... General Name, Symbol, Number radon, Rn, 86 Chemical series noble gases Group, Period, Block 18, 6, p Appearance colorless Atomic mass (222) g/mol Electron configuration [Xe] 4f14 5d10 6s2 6p6 Electrons per shell 2, 8, 18, 32, 18, 8 Physical properties Phase gas Melting point 202 K (-71 °C... Friedrich Ernst Dorn (1848-1916) was a German physicist who discovered radon in 1900. ... General Name, Symbol, Number francium, Fr, 87 Chemical series alkali metals Group, Period, Block 1, 7, s Appearance metallic Atomic mass (223) g/mol Electron configuration [Rn] 7s1 Electrons per shell 2, 8, 18, 32, 18, 8, 1 Physical properties Phase solid Density (near r. ... Marguerite Catherine Perey (1909 - 1975) was a French physicist. ... General Name, Symbol, Number radium, Ra, 88 Chemical series alkaline earth metals Group, Period, Block 2, 7, s Appearance silvery white metallic Atomic mass (226) g/mol Electron configuration [Rn] 7s2 Electrons per shell 2, 8, 18, 32, 18, 8, 2 Physical properties Phase solid Density (near r. ... Maria SkÅ‚odowska-Curie, the only person to win two Science Nobel Prizes in different fields, was one of the most significant researchers of radiation and its effects. ... Pierre Curie Pierre Curie (May 15, 1859, Paris – April 19, 1906, Paris) was a French physicist and a pioneer in the study of crystallography, magnetism, piezoelectricity and radioactivity. ... General Name, Symbol, Number actinium, Ac, 89 Chemical series actinides Group, Period, Block 3, 7, f Appearance silvery Atomic mass (227) g/mol Electron configuration [Rn] 6d1 7s2 Electrons per shell 2, 8, 18, 32, 18, 9, 2 Physical properties Phase solid Density (near r. ... André-Louis Debierne (1874 - August, 1949) was a French chemist, born in Paris. ... General Name, Symbol, Number thorium, Th, 90 Chemical series Actinides Group, Period, Block n/a, 7, f Appearance silvery white Atomic mass 232. ... Jöns Jakob Berzelius Statue of Berzelius in the centre of Berzelii Park, Stockholm Jöns Jakob Berzelius (August 20, 1779 - August 7, 1848) was a Swedish chemist. ... General Name, Symbol, Number protactinium, Pa, 91 Chemical series actinides Group, Period, Block ?, 7, f Appearance bright, silvery metallic luster Atomic mass 231. ... Frederick Soddy in 1922. ... Otto Hahn (March 8, 1879 – July 28, 1968) was a German chemist. ... General Name, Symbol, Number uranium, U, 92 Chemical series actinides Group, Period, Block n/a, 7, f Appearance silvery gray metallic; corrodes to a spalling black oxide coat in air Atomic mass 238. ... Martin Heinrich Klaproth Martin Heinrich Klaproth (December 1, 1743 – January 1, 1817) was a German chemist. ... General Name, Symbol, Number neptunium, Np, 93 Chemical series actinides Group, Period, Block n/a, 7, f Appearance silvery metallic Atomic mass (237) g/mol Electron configuration [Rn] 5f4 6d1 7s2 Electrons per shell 2, 8, 18, 32, 22, 9, 2 Physical properties Phase solid Density (near r. ... Edwin Mattison McMillan (September 18, 1907-September 7, 1991) was the first scientist to produce a transuranium element. ... Philip Hauge Abelson (April 27, 1913 - August 1, 2004) was a physicist, editor of scientific literature, and science writer. ... General Name, Symbol, Number plutonium, Pu, 94 Chemical series actinides Group, Period, Block n/a, 7, f Appearance silvery white Atomic mass (244) g/mol Electron configuration [Rn] 5f6 7s2 Electrons per shell 2, 8, 18, 32, 24, 8, 2 Physical properties Phase solid Density (near r. ... Glenn T. Seaborg Glenn Theodore Seaborg (April 19, 1912 – February 25, 1999) was an American chemist prominent in the discovery and isolation of many transuranic elements (including plutonium, during the Manhattan Project). ... General Name, Symbol, Number americium, Am, 95 Chemical series actinides Group, Period, Block n/a, 7, f Appearance silvery white Atomic mass (243) g/mol Electron configuration [Rn] 5f7 7s2 Electrons per shell 2, 8, 18, 32, 25, 8, 2 Physical properties Phase solid Density (near r. ... Glenn T. Seaborg Glenn Theodore Seaborg (April 19, 1912 – February 25, 1999) was an American chemist prominent in the discovery and isolation of many transuranic elements (including plutonium, during the Manhattan Project). ... General Name, Symbol, Number curium, Cm, 96 Chemical series actinides Group, Period, Block ?, 7, f Appearance silvery Atomic mass (247) g/mol Electron configuration [Rn] 5f7 6d1 7s2 Electrons per shell 2, 8, 18, 32, 25, 9, 2 Physical properties Phase solid Density (near r. ... Glenn T. Seaborg Glenn Theodore Seaborg (April 19, 1912 – February 25, 1999) was an American chemist prominent in the discovery and isolation of many transuranic elements (including plutonium, during the Manhattan Project). ... General Name, Symbol, Number berkelium, Bk, 97 Chemical series actinides Group, Period, Block n/a, 7, f Appearance unknown, probably silvery white or metallic gray Atomic mass (247) g/mol Electron configuration [Rn] 5f9 7s2 Electrons per shell 2, 8, 18, 32, 27, 8, 2 Physical properties Phase solid Density... Glenn T. Seaborg Glenn Theodore Seaborg (April 19, 1912 – February 25, 1999) was an American chemist prominent in the discovery and isolation of many transuranic elements (including plutonium, during the Manhattan Project). ... General Name, Symbol, Number californium, Cf, 98 Chemical series actinides Group, Period, Block n/a, 7, f Appearance unknown, probably silvery white or metallic gray Atomic mass (251) g/mol Electron configuration [Rn] 5f10 7s2 Electrons per shell 2, 8, 18, 32, 28, 8, 2 Physical properties Phase solid Density... Glenn T. Seaborg Glenn Theodore Seaborg (April 19, 1912 – February 25, 1999) was an American chemist prominent in the discovery and isolation of many transuranic elements (including plutonium, during the Manhattan Project). ... General Name, Symbol, Number einsteinium, Es, 99 Chemical series actinides Group, Period, Block ?, 7, f Appearance unknown, probably silvery white or metallic gray Atomic mass (252) g/mol Electron configuration [Rn] 5f11 7s2 Electrons per shell 2, 8, 18, 32, 29, 8, 2 Physical properties Phase solid Density (near r. ... Glenn T. Seaborg Glenn Theodore Seaborg (April 19, 1912 – February 25, 1999) was an American chemist prominent in the discovery and isolation of many transuranic elements (including plutonium, during the Manhattan Project). ... General Name, Symbol, Number fermium, Fm, 100 Chemical series actinides Group, Period, Block ?, 7, f Appearance unknown, probably silvery white or metallic gray Atomic mass (257) g/mol Electron configuration [Rn] 5f12 7s2 Electrons per shell 2, 8, 18, 32, 30, 8, 2 Physical properties Phase solid Melting point 1800... Glenn T. Seaborg Glenn Theodore Seaborg (April 19, 1912 – February 25, 1999) was an American chemist prominent in the discovery and isolation of many transuranic elements (including plutonium, during the Manhattan Project). ... General Name, Symbol, Number mendelevium, Md, 101 Chemical series actinides Group, Period, Block ?, 7, f Appearance unknown, probably silvery white or metallic gray Atomic mass (258) g/mol Electron configuration [Rn] 5f13 7s2 Electrons per shell 2, 8, 18, 32, 31, 8, 2 Physical properties Phase solid Melting point 1100... Glenn T. Seaborg Glenn Theodore Seaborg (April 19, 1912 – February 25, 1999) was an American chemist prominent in the discovery and isolation of many transuranic elements (including plutonium, during the Manhattan Project). ... General Name, Symbol, Number nobelium, No, 102 Chemical series actinides Group, Period, Block ?, 7, f Appearance unknown, probably silvery white or metallic gray Atomic mass (259) g/mol Electron configuration [Rn] 5f14 7s2 Electrons per shell 2, 8, 18, 32, 32, 8, 2 Physical properties Phase solid Melting point 1100... Glenn T. Seaborg Glenn Theodore Seaborg (April 19, 1912 – February 25, 1999) was an American chemist prominent in the discovery and isolation of many transuranic elements (including plutonium, during the Manhattan Project). ... General Name, Symbol, Number lawrencium, Lr, 103 Chemical series actinides Group, Period, Block n/a, 7, d Appearance unknown, probably silvery white or metallic gray Atomic mass (260) g/mol Electron configuration probably [Rn] 5f14 7s2 7p1 Electrons per shell 2, 8, 18, 32, 32, 8, 3 Phase presumably a... Albert Ghiorso (b. ... General Name, Symbol, Number rutherfordium, Rf, 104 Chemical series transition metals Group, Period, Block 4, 7, d Appearance unknown, probably silvery white or metallic gray Atomic mass (261) g/mol Electron configuration probably [Rn] 5f14 6d2 7s2 Electrons per shell 2, 8, 18, 32, 32, 10, 2 Phase presumably a... G. Flerov Georgii N. Flerov (also, Georgy Nikolaevich Flerov) (March 2, 1913-November 19, 1990) was a prominent Soviet nuclear physicist. ... General Name, Symbol, Number dubnium, Db, 105 Chemical series transition metals Group, Period, Block 5, 7, d Appearance unknown, probably silvery white or metallic gray Atomic mass (262) g/mol Electron configuration perhaps [Rn] 5f14 6d3 7s2 (guess based on tantalum) Electrons per shell 2, 8, 18, 32, 32, 11... G. Flerov Georgii N. Flerov (also, Georgy Nikolaevich Flerov) (March 2, 1913-November 19, 1990) was a prominent Soviet nuclear physicist. ... General Name, Symbol, Number seaborgium, Sg, 106 Chemical series transition metals Group, Period, Block 6, 7, d Appearance unknown, probably silvery white or metallic gray Atomic mass (266) g/mol Electron configuration perhaps [Rn] 5f14 6d4 7s2 (guess based on tungsten) Electrons per shell 2, 8, 18, 32, 32, 12... G. Flerov Georgii N. Flerov (also, Georgy Nikolaevich Flerov) (March 2, 1913-November 19, 1990) was a prominent Soviet nuclear physicist. ... General Name, Symbol, Number bohrium, Bh, 107 Chemical series transition metals Group, Period, Block 7, 7, d Appearance unknown, probably silvery white or metallic gray Atomic mass (264) g/mol Electron configuration perhaps [Rn] 5f14 6d5 7s2 (guess based on rhenium) Electrons per shell 2, 8, 18, 32, 32, 13... General Name, Symbol, Number hassium, Hs, 108 Chemical series transition metals Group, Period, Block 8, 7, d Appearance unknown, probably silvery white or metallic gray Atomic mass (269) g/mol Electron configuration perhaps [Rn] 5f14 6d6 7s2 (guess based on osmium) Electrons per shell 2, 8, 18, 32, 32, 14... The Gesellschaft für Schwerionenforschung mbH (GSI, Institute for Heavy Ion Research) in Wixhausen, a suburb of Darmstadt, Germany is a federally funded heavy ion research center. ... General Name, Symbol, Number meitnerium, Mt, 109 Chemical series transition metals Group, Period, Block 9, 7, d Appearance unknown, probably silvery white or metallic gray Atomic mass (268) g/mol Electron configuration perhaps [Rn] 5f14 6d7 7s2 (guess based on iridium) Electrons per shell 2, 8, 18, 32, 32, 15... The Gesellschaft für Schwerionenforschung mbH (GSI, Institute for Heavy Ion Research) in Wixhausen, a suburb of Darmstadt, Germany is a federally funded heavy ion research center. ... General Name, Symbol, Number darmstadtium, Ds, 110 Chemical series transition metals Group, Period, Block 10, 7, d Appearance unknown, probably silvery white or metallic gray Atomic mass (281) g/mol Electron configuration perhaps [Rn] 5f14 6d9 7s1 (guess based on platinum) Electrons per shell 2, 8, 18, 32, 32, 17... The Gesellschaft für Schwerionenforschung mbH (GSI, Institute for Heavy Ion Research) in Wixhausen, a suburb of Darmstadt, Germany is a federally funded heavy ion research center. ... General Name, Symbol, Number roentgenium, Rg, 111 Chemical series transition metals Group, Period, Block 11, 7, d Appearance unknown, probably yellow or orange metallic Atomic mass (272) g/mol Electron configuration perhaps [Rn] 5f14 6d10 7s1 (guess based on gold) Electrons per shell 2, 8, 18, 32, 32, 18, 1... The Gesellschaft für Schwerionenforschung mbH (GSI, Institute for Heavy Ion Research) in Wixhausen, a suburb of Darmstadt, Germany is a federally funded heavy ion research center. ... General Name, Symbol, Number ununbium, Uub, 112 Chemical series transition metals Group, Period, Block 12, 7, d Appearance unknown, probably silvery white or metallic gray liquid Atomic mass (285) g/mol Electron configuration perhaps [Rn] 5f14 6d10 7s2 (guess based on mercury) Electrons per shell 2, 8, 18, 32, 32... The Gesellschaft für Schwerionenforschung mbH (GSI, Institute for Heavy Ion Research) in Wixhausen, a suburb of Darmstadt, Germany is a federally funded heavy ion research center. ... General Name, Symbol, Number ununtrium, Uut, 113 Chemical series presumably poor metals Group, Period, Block 13, 7, p Appearance unknown, probably silvery white or metallic gray Atomic mass (284) g/mol Electron configuration perhaps [Rn] 5f14 6d10 7s2 7p1 (guess based on thallium) Electrons per shell 2, 8, 18, 32... The Joint Institute for Nuclear Research, JINR (Объединённый институт ядерных исследований, ОИЯИ in Russian) in Dubna, Moscow Oblast (120 km north of Moscow), Russia is an international research centre for nuclear sciences, involving around 1000 scientists from eighteen states (Armenia, Azerbaijan, Belarus, Bulgaria, Cuba, Czech Republic, Georgia, Kazakhstan, DPR Korea, Moldova, Mongolia, Poland,Romania, Russia... Aerial view of the lab and surrounding area. ... General Name, Symbol, Number ununquadium, Uuq, 114 Chemical series presumably poor metals Group, Period, Block 14, 7, p Appearance unknown, probably silvery white or metallic gray Atomic mass (289) g/mol Electron configuration perhaps [Rn] 5f14 6d10 7s2 7p2 (guess based on lead) Electrons per shell 2, 8, 18, 32... The Joint Institute for Nuclear Research, JINR (Объединённый институт ядерных исследований, ОИЯИ in Russian) in Dubna, Moscow Oblast (120 km north of Moscow), Russia is an international research centre for nuclear sciences, involving around 1000 scientists from eighteen states (Armenia, Azerbaijan, Belarus, Bulgaria, Cuba, Czech Republic, Georgia, Kazakhstan, DPR Korea, Moldova, Mongolia, Poland,Romania, Russia... General Name, Symbol, Number ununpentium, Uup, 115 Chemical series presumably poor metals Group, Period, Block 15, 7, p Appearance unknown, probably silvery white or metallic gray Atomic mass (288) g/mol Electron configuration perhaps [Rn] 5f14 6d10 7s2 7p3 (guess based on bismuth) Electrons per shell 2, 8, 18, 32... The Joint Institute for Nuclear Research, JINR (Объединённый институт ядерных исследований, ОИЯИ in Russian) in Dubna, Moscow Oblast (120 km north of Moscow), Russia is an international research centre for nuclear sciences, involving around 1000 scientists from eighteen states (Armenia, Azerbaijan, Belarus, Bulgaria, Cuba, Czech Republic, Georgia, Kazakhstan, DPR Korea, Moldova, Mongolia, Poland,Romania, Russia... Aerial view of the lab and surrounding area. ... General Name, Symbol, Number ununhexium, Uuh, 116 Chemical series presumably poor metals Group, Period, Block 16, 7, p Appearance unknown, probably silvery white or metallic gray Atomic mass (292) g/mol Electron configuration perhaps [Rn] 5f14 6d10 7s2 7p4 (guess based on polonium) Electrons per shell 2, 8, 18, 32... The Berkeley Lab is perched on a hill overlooking the Berkeley central campus and San Francisco Bay. ... General Name, Symbol, Number ununseptium, Uus, 117 Chemical series presumably halogens Group, Period, Block 17, 7, p Appearance unknown, probably dark metallic Atomic mass (291) g/mol Electron configuration perhaps [Rn] 5f14 6d10 7s2 7p5 (guess based on astatine) Electrons per shell 2, 8, 18, 32, 32, 18, 7 Phase... General Name, Symbol, Number ununoctium, Uuo, 118 Chemical series noble gases Group, Period, Block 18, 7, p Appearance unknown, probably colorless Atomic mass predicted, Uuo-293 293. ... sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex sex... The periodic table of the chemical elements is a tabular method of displaying the chemical elements, first devised in 1869 by the Russian chemist Dmitri Mendeleev. ... The alkali metals are the series of elements in Group 1 (IUPAC style) of the periodic table (excluding hydrogen in all but one rare circumstance): lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr). ... The alkaline earth metals are the series of elements in Group 2 (IUPAC style) of the periodic table: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba) and radium (Ra) (not always considered due to its radioactivity and very short half-life). ... The lanthanide series comprises the 15 elements from lanthanum to lutetium on the periodic table, with atomic numbers 57 through 71. ... The actinide series encompasses the 15 chemical elements that lie between actinium and lawrencium on the periodic table with atomic numbers 89 - 103. ... In chemistry, the term transition metal (sometimes also called a transition element) has two possible meanings: It commonly refers to any element in the d-block of the periodic table, including zinc, cadmium and mercury. ... The poor metals or post-transition metals are the metallic elements of the p-block of the periodic table, occurring between the metalloids and the transition metals. ... Together with the metals and nonmetals, the metalloids (in Greek metallon = metal and eidos = sort - also called semimetals) form one of the three categories of chemical elements as classified by ionization and bonding properties. ... Together with the metals and metalloids, a nonmetal is one of three categories of chemical elements as distinguished by ionisation and bonding properties. ... The halogens The halogens are a chemical series. ... For the musical band, see Noble Gas (band) The noble gases are the chemical elements in group 18 (old-style Group 0) of the periodic table. ...

Acronyms

The Gesellschaft für Schwerionenforschung mbH (GSI, Institute for Heavy Ion Research) in Wixhausen, a suburb of Darmstadt, Germany is a federally funded heavy ion research center. ... The Joint Institute for Nuclear Research, JINR (Объединённый институт ядерных исследований, ОИЯИ in Russian) in Dubna, Moscow Oblast (120 km north of Moscow), Russia is an international research centre for nuclear sciences, involving around 1000 scientists from eighteen states (Armenia, Azerbaijan, Belarus, Bulgaria, Cuba, Czech Republic, Georgia, Kazakhstan, DPR Korea, Moldova, Mongolia, Poland,Romania, Russia... Aerial view of the lab and surrounding area. ... The Berkeley Lab is perched on a hill overlooking the Berkeley central campus and San Francisco Bay. ...

Notes

  • Note 1: The element does not have any stable nuclides, and a value in brackets, e.g. [209], indicates the mass number of the longest-lived isotope of the element or characteristic isotopic composition.
  • Note 2: The isotopic composition of this element varies in some geological specimens, and the variation may exceed the uncertainty stated in the table.
  • Note 3: The isotopic composition of the element can vary in commercial materials, which can cause the atomic weight to deviate significantly from the given value.
  • Note 4: The isotopic composition varies in terrestrial material such that a more precise atomic weight can not be given.
  • Note 5: The atomic weight of commercial Lithium can vary between 6.939 and 6.996—analysis of the specific material is necessary to find a more accurate value.

References

  • Atomic Weights of the Elements 2001, Pure Appl. Chem. 75(8), 1107-1122, 2003. Retrieved June 30, 2005. Atomic weights of elements with atomic numbers from 1-109 taken from this source.
  • IUPAC Standard Atomic Weights Revised (2005).
  • WebElements Periodic Table. Retrieved June 30, 2005. Atomic weights of elements with atomic numbers 110-116 taken from this source.

Periodic tables June 30 is the 181st day of the year (182nd in leap years) in the Gregorian Calendar, with 184 days remaining. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... June 30 is the 181st day of the year (182nd in leap years) in the Gregorian Calendar, with 184 days remaining. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... The periodic table of the chemical elements is a tabular method of displaying the chemical elements, first devised in 1869 by the Russian chemist Dmitri Mendeleev. ...

Standard table | Vertical table | Table with names | Names and atomic masses (large) | Names and atomic masses (small) | Names and atomic masses (text only) | Inline F-block | Elements to 218 | Electron configurations | Metals and nonmetals | Table by blocks

Lists of elements For information about the period table of elements, see Periodic table. ... The alternate table is a periodic table perpendicularly rotated counterclockwise, hence like in many writing systems, the lower groups are to the left and the number increases to the right. ... Category: ... The large version of the periodic table set out below does not fit into some computer screens; however, with a small font size and/or in landscape mode, it may be possible to print this periodic table on one or two normal-size sheets of paper. ... The Detailed Table is a smaller version of the Huge Table. ... The text-only table is a version of the Huge Table designed for printing atomic mass data. ... Color coding for atomic numbers: Elements numbered in blue are liquids at Standard Temperature and Pressure (STP); those numbered in green are gases at STP; those numbered in black are solid at STP; those numbered in red are synthetic (all are solid at STP). ... This extended periodic table was suggested by Glenn T. Seaborg in 1969. ... electron numbers indicate subshells that are filled to their maximum. ... Color coding for atomic numbers: Elements numbered in blue are liquids at Standard Temperature and Pressure (STP); those in green are gases at STP; those in black are solid at STP; those in red are synthetic (all are solid at STP). ... Color coding for atomic numbers: Elements numbered in blue are liquids at Standard Temperature and Pressure (STP); those in green are gases at STP; those in black are solid at STP; those in red are synthetic (all are solid at STP). ...

Name | Atomic symbol | Atomic number | Boiling point | Melting point | Density | Atomic mass
Groups:   1 -  2 -  3 -  4 -  5 -  6 -  7 -  8 -  9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18
Periods:  1  -  2  -  3  -  4  -  5  -  6  -  7  -  8  -  9
Series:   Alkalis  -  Alkaline earths  -  Lanthanides  -  Actinides  -  Transition metals  -  Poor metals  -  Metalloids  -  Nonmetals  -  Halogens  -  Noble gases
Blocks:  s-block  -  p-block  -  d-block  -  f-block  -  g-block

  Results from FactBites:
 
The world's top Chemistry websites (1089 words)
An element is a material that consists of atoms with a given number of protons in the nucleus.
This number is known as the atomic number of the element.
Lists of the elements by name, by symbol, and by atomic number are also available.
List of elements by atomic number: Encyclopedia of chemistry, analytics & pharmaceutics with 64,564 entries. (243 words)
The isotopic composition of this element varies in some geological specimens, and the variation may exceed the uncertainty stated in the table.
[209], indicates the mass number of the longest-lived isotope of the element or characteristic isotopic composition.
Atomic weights of elements with atomic numbers from 1-109 taken from this source.
  More results at FactBites »


 

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