A period 7 element is one of the chemical elements in the seventh row (or period) of the periodic table of the elements. A chemical element, often called simply element, is the class of atoms which contain the same number of protons. ... In the periodic table of the elements, a period is a row of the table. ... The periodic table of the chemical elements, also called the Mendeleev periodic table, is a tabular display of the known chemical elements. ...

These are:

A periodic table group is a vertical column in the periodic table of the chemical elements. ... The alkali metals are the series of elements in Group 1 (IUPAC style) of the periodic table, excluding hydrogen: that is, 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 of the periodic table: beryllium, magnesium, calcium, strontium, barium and radium (not always considered due to its very short half-life). ... A Group 3 element is an element in periodic table group 3 (IUPAC style) in the periodic table, which consists of: scandium (21) yttrium (39) lanthanum (57) - lutetium (71) actinium (89) - lawrencium (103) All of these elements are classed in Group 3 because their outer shell holds three electrons. ... A Group 4 element is an element in periodic table group 4 (IUPAC style) in the periodic table, which consists of: titanium (22) zirconium (40) hafnium (72) rutherfordium (104) All of these elements are classed in Group 4 because their valence shell holds four electrons. ... A Group 5 element is an element in periodic table group 5 (IUPAC style) in the periodic table, which consists of: vanadium (23) niobium (41) tantalum (73) dubnium (105) All of these elements are classed in Group 5 because their valence shell holds four electrons. ... The group 6 in the periodic table consists of the elements chromium (24) molybdenum (42) tungsten (74) seaborgium (106) Group 6 is the new IUPAC name for this group, the old style name was group VIA in the old European system or group VIB in the old US system. ... A Group 7 element is an element in periodic table group 7 (IUPAC style) in the periodic table, which consists of: manganese (25) technetium (43) rhenium (75) bohrium (107) All of these elements are classed in Group 7 because their valence shell holds four electrons. ... A Group 8 element is an element in periodic table group 8 (IUPAC style) in the periodic table, which consists of: Iron (26) Ruthenium (44) Osmium (76) Hassium (108) All of these elements are classed in Group 8 because their valence shell holds four electrons. ... The Group 9 elements are: Cobalt (27) Rhodium (45) Iridium (77) Meitnerium (109) Color coding for these atomic numbers: At room temperature, all are solid; red indicates item is synthetic and does not occur naturally. ... The Group 10 elements are: Nickel (28) Palladium (46) Platinum (78) Darmstadtium (110) Color coding for these atomic numbers: At room temperature, all are solid; red indicates item is synthetic and does not occur naturally. ... The Group 11 Elements (IB) of the periodic table consist of the traditional coinage metals of copper, silver, and gold. ... The Group 12 elements are: Zinc (30) Cadmium (48) Mercury (80) Ununbium (112) Color coding for these atomic numbers: At room temperature, all are solid but mercury is liquid; red indicates item is synthetic and does not occur naturally. ... The Boron group is periodic table group 13 (IUPAC style) in the periodic table. ... The carbon group is group 14 (IUPAC style) in the periodic table. ... The group 15 elements(a. ... The chalcogens are the name for the periodic table group 16 (old-style: VIB or VIA) in the periodic table. ... For the halogen light bulb, click here. ... The noble gases are the chemical elements in group 18 (old-style Group 0) of the periodic table. ... General Name, Symbol, Number Francium, Fr, 87 Series Alkali metals Group, Period, Block 1(IA), 7, s Density, Hardness 1870 kg/m3, no data Appearance metallic Atomic properties Atomic weight (223. ... General Name, Symbol, Number Radium, Ra, 88 Series Alkali earth metals Group, Period, Block 2(IIA), 7, s Density, Hardness 5000 kg/m3, no data Appearance Silvery white metallic Atomic Properties Atomic weight (226. ... Known properties Name, Symbol, Number Rutherfordium, Rf, 104 Chemical series Transition metals Group, Period, Block 4, 7 , d Appearance unknown Atomic weight [261] amu Electron configuration probably [Rn]5f14 6d2 7s2 e- s per energy level 2,8,18,32,32,10,2 State of matter Presumably a solid Rutherfordium... Known properties Name, Symbol, Number dubnium, Db, 105 Chemical series Transition metals Group, Period, Block 5, 7, d Appearance unknown; probably metallic, silvery white or gray Atomic weight [262] amu Electron configuration probably [Rn]5f14 6d3 7s2 e- s per energy level 2, 8, 18, 32, 32, 11, 2 State... Known properties Name, Symbol, Number seaborgium, Sg, 106 Chemical series Transition metals Group, Period, Block 6, 7 , d Appearance unknown Atomic weight [266] amu Electron configuration probably [Rn]5f14 6d4 7s2 e- s per energy level 2, 8, 18, 32, 32, 12, 2 State of matter presumably a solid Seaborgium... Known properties Name, Symbol, Number Bohrium, Bh, 107 Chemical series Transition metals Group, Period, Block 7, 7, d Appearance unknown; probably metallic, silvery white or gray Atomic weight [264] amu Electron configuration probably [Rn]5f14 6d5 7s2 e- s per energy level 2, 8, 18, 32, 32, 13, 2 State... Known properties Name, Symbol, Number Hassium, Hs, 108 Chemical series Transition metals Group, Period, Block 8, 7, d Appearance unknown Atomic weight [269] amu Electron configuration probably [Rn] 5f14 6d6 7s2 a guess based osmium e- s per energy level 2, 8, 18, 32, 32, 14, 2 State of matter... Known properties Name, Symbol, Number meitnerium, 109, Mt Chemical series Transition metals Group, Period, Block 9, 7, d Appearance unknown Atomic weight [268] amu Electron configuration probably [Rn] 5f14 6d7 7s2 e- s per energy level 2, 8, 18, 32, 32, 15, 2 State of matter Presumably a solid Meitnerium... Known properties Name, Symbol, Number Darmstadtium, Ds, 110 Chemical series Transition metals Group, Period, Block 10, 7, d Appearance unknown Atomic weight From [267] amu to [281] amu Electron configuration probably [Rn] 5f14 6d9 7s1 a guess based upon platinum e- s per energy level 2, 8, 18, 32, 32... General Name, Symbol, Number roentgenium, Rg, 111 Chemical series transition metals Group, Period, Block 11, 7, d Appearance unknown, probably silvery white or metallic gray 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... Known properties Name, Symbol, Number Ununbium, Uub, 112 Chemical series Transition metal Group, Period, Block 12, 7, d Appearance Unknown, probably a metallic and silvery white or grey colour. ... Predicted properties Name, Symbol, Number Ununtrium, Uut, 113 Chemical series Presumably poor metals Group, Period, Block 13, 7 , p Appearance Unknown Atomic weight [284] amu (A guess) Electron configuration [Rn] 5f14 6d10 7s27p1 (A guess based upon thallium) e- s per energy level 2, 8, 18, 32, 32, 18, 3... Known properties Name, Symbol, Number Ununquadium, Uuq, 114 Chemical series Presumably poor metals Group, Period, Block 14, 7, p Appearance Unknown, probably a metallic and silvery white or grey colour Atomic weight [289] amu Supposed half-life 30 seconds Electron configuration [Rn] 5f14 6d10 7s27p2 (a guess based upon radon... Predicted properties Name, Symbol, Number ununpentium, Uup, 115 Chemical series presumably poor metals Group, Period, Block 15, 7 , p Appearance unknown Atomic weight [288] amu (a guess) Electron configuration [Rn] 5f14 6d10 7s27p3 (a guess based upon bismuth) e-s per energy level 2, 8, 18, 32, 32, 18, 5... Predicted properties Name, Symbol, Number Ununhexium, Uuh, 116 Chemical series Presumably poor metals Group, Period, Block 16, 7 , p Appearance Unknown, probably a metallic and silvery white or grey color Atomic weight [292] amu Electron configuration [Rn] 5f14 6d10 7s27p4 (a guess based upon polonium) e-s per energy level... Predicted properties Name, Symbol, Number Ununseptium, Uus, 117 Chemical series Presumably Halogens Group, Period, Block 17, 7, p Appearance unknown, but probably metallic and dark in appearance Atomic weight [291] amu (a guess) Electron configuration [Rn] 5f14 6d10 7s27p5 (a guess based upon astatine) e-s per energy level 2... Predicted properties Name, Symbol, Number Ununoctium, Uuo, 118 Chemical series Presumably noble gases Group, Period, Block 18, 7, p Appearance Unknown, probably colourless Atomic weight [293] amu (a guess) Electron configuration [Rn] 5f14 6d10 7s27p6 (a guess based upon radon) e-s per energy level 2, 8, 18, 32, 32... Electron atomic and molecular orbitals In atomic physics, the electron configuration is the arrangement of electrons in an atom, molecule or other body. ... The actinide series encompasses the 14 chemical elements that lie between thorium and lawrencium on the periodic table with atomic numbers 90 - 103 inclusive. ... General Name, Symbol, Number actinium, Ac, 89 Chemical series Actinides Group, Period, Block 3 , 7, f Density, Hardness 10070 kg/m3, n/a Appearance silvery Atomic properties Atomic weight (227) u Atomic radius (calc. ... General Name, Symbol, Number thorium, Th, 90 Chemical series transition metals Group, Period, Block ?, 7, f Appearance silvery white Atomic mass 232. ... General Name, Symbol, Number protactinium, Pa, 91 Chemical series Transition metals Group, Period, Block _ , 7, f Density, Hardness 15370 kg/m3, no data Appearance bright, silvery metallic luster Atomic properties Atomic weight 231. ... General Name, Symbol, Number uranium, U, 92 Chemical series actinides Group, Period, Block ?, 7, f Appearance silvery gray metallic Atomic mass 238. ... General Name, Symbol, Number Neptunium, Np, 93 Chemical series Actinides Period, Block 7, f Density, Hardness 20250 kg/m3, n/a Appearance Silvery metallic Atomic properties Atomic weight [237] u Atomic radius (calc. ... General Name, Symbol, Number plutonium, Pu, 94 Chemical series actinides Group, Period, Block ?, 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. ... General Name, Symbol, Number americium, Am, 95 Chemical series actinides Group, Period, Block ?, 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. ... General Name, Symbol, Number curium, Cm, 96 Chemical series actinides Period, Block 7 , f Appearance silvery Atomic properties Atomic weight [247] amu Atomic radius (calc. ... Known properties Name, Symbol, Number Berkelium, Bk, 97 Chemical series Actinides Period, Block 7, f Appearance unknown; probably metallic, silvery white or gray Atomic weight [247] amu Electron configuration [Rn] 5f9 7s2 e- s per energy level 2,8,18,32,27,8,2 State of matter solid Density 14780... Known properties Name, Symbol, Number Californium, Cf, 98 Chemical series Actinides Period, Block 7, f Appearance unknown; probably metallic, silvery white or gray Atomic weight [251] amu Electron configuration [Rn]5f107s2 e-s per energy level 2,8,18,32,28,8,2 State of matter solid Most stable isotopes... Known properties Name, Symbol, Number Einsteinium, Es, 99 Chemical series Actinides Period, Block 7 , f Appearance unknown; probably metallic, silvery white or gray Atomic weight [252] amu Electron configuration probably [Rn]5f11 7s2 e- s per energy level 2, 8, 18, 32, 29, 8, 2 State of matter Solid Most... Known properties Name, Symbol, Number Fermium, Fm, 100 Chemical series Actinides Period, Block 7, f Appearance unknown; probably metallic, silvery white or gray Atomic weight [257] amu Electron configuration [Rn]5f12 7s2 e-s per energy level 2, 8, 18, 32, 30, 8, 2 State of matter Presumably a solid... Known properties Name, Symbol, Number Mendelevium, Md, 101 Chemical series Actinides Period, Block 7 , f Appearance unknown; probably metallic, silvery white or gray Atomic weight [258] amu Electron configuration [Rn]5f13 7s2 e- s per energy level 2, 8, 18, 32, 31, 8, 2 State of matter Presumably a solid... Known properties Name, Symbol, Number Nobelium, No, 102 Chemical series Actinides Period, Block 7, f Appearance unknown Atomic weight [259] u Electron configuration [Rn] 5f14 7s2 e- s per energy level 2, 8, 18, 32, 32, 8, 2 State of matter Presumably a solid Most stable isotopes Nobelium, also known... Known properties Name, Symbol, Number lawrencium, Lr, 103 Chemical series Transition metals Group, Period, Block 3, 7, d Appearance unknown; probably metallic, silvery white or gray Atomic weight [ 262 ] amu Electron configuration probably [Rn]5f14 6d1 7s2 e- s per energy level 2, 8, 18, 32, 32, 9, 2 State... Electron atomic and molecular orbitals In atomic physics, the electron configuration is the arrangement of electrons in an atom, molecule or other body. ... The alkali metals are the series of elements in Group 1 (IUPAC style) of the periodic table, excluding hydrogen: that is, 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 of the periodic table: beryllium, magnesium, calcium, strontium, barium and radium (not always considered due to its very short half-life). ... The lanthanide series comprises the 14 rare earth elements from cerium to lutetium on the periodic table, with atomic numbers 58 through 71. ... The actinide series encompasses the 14 chemical elements that lie between thorium and lawrencium on the periodic table with atomic numbers 90 - 103 inclusive. ... 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 and scandium. ... The poor metals or post-transition metals are the metallic elements of the p-block, occurring between the metalloids and the transition metals, shown belown in red. ... 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 ionization and bonding properties. ... For the halogen light bulb, click here. ... The noble gases are the chemical elements in group 18 (old-style Group 0) of the periodic table. ... A period 1 element is one of the chemical elements in the first row (or period) of the periodic table of the elements. ... A period 2 element is one of the chemical elements in the second row (or period) of the periodic table of the elements. ... A period 3 element is one of the chemical elements in the third row (or period) of the periodic table of the elements. ... A period 4 element is one of the chemical elements in the fourth row (or period) of the periodic table of the elements. ... A period 5 element is one of the chemical elements in the fifth row (or period) of the periodic table of the elements. ... A period 6 element is one of the chemical elements in the sixth row (or period) of the periodic table of the elements, including the Lanthanides. ... A period 8 element is one of the chemical elements in the eighth row (or period) of the periodic table of the elements. ...