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109 hassium ← meitnerium → darmstadtium Ir ↑ Mt ↓ (Upe) Periodic Table - Extended Periodic Table 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−1 Electron configuration perhaps [Rn] 5f14 6d7 7s2 (guess based on iridium) Electrons per shell 2, 8, 18, 32, 32, 15, 2 Phase presumably a solid CAS registry number 54038-01-6 References Meitnerium (IPA: /ˌmʌɪtˈnɛːriəm/), also called eka-iridium, is a chemical element in the periodic table that has the symbol Mt and atomic number 109. It is a synthetic element whose most stable isotope is Mt-276 with a half-life of 720 milliseconds. 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... 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... General Name, Symbol, Number iridium, Ir, 77 Chemical series transition metals Group, Period, Block 9, 6, d Appearance silvery white Atomic mass 192. ... Image File history File links Download high resolution version (900x270, 22 KB) Image taken from en: Authors: Daniel Mayer (en:User:Maveric149) and/or Arnaud Gaillard (fr:Utilisateur:Greatpatton) File links The following pages link to this file: Meitnerium User:Femto/elements e10 ... This is a standard display of the periodic table of elements. ... This extended periodic table was suggested by Glenn T. Seaborg in 1969. ... This is a list of chemical elements, sorted by name and color coded according to type of element. ... Categories: Chemical elements ... 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... 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. ... 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. ... A block of the periodic table of elements is a set of adjacent groups. ... 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. ... A period 7 element is one of the chemical elements in the seventh row (or period) of the periodic table of the elements. ... D Block is a rap group based in Yonkers, New York. ... Color is an important part of the visual arts. ... The atomic mass of a chemical element is the mass of an atom at rest, most often expressed in unified atomic mass units. ... To help compare different orders of magnitude we list here masses between 60. ... Electron atomic and molecular orbitals In atomic physics and quantum chemistry, the electron configuration is the arrangement of electrons in an atom, molecule, or other physical structure (eg, a crystal). ... 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 Density (0 °C, 101. ... General Name, Symbol, Number iridium, Ir, 77 Chemical series transition metals Group, Period, Block 9, 6, d Appearance silvery white Atomic mass 192. ... The electron is a fundamental subatomic particle that carries an electric charge. ... Example of a sodium electron shell model An electron shell, also known as a main energy level, is a group of atomic orbitals with the same value of the principal quantum number n. ... In the physical sciences, a phase is a set of states of a macroscopic physical system that have relatively uniform chemical composition and physical properties (i. ... In jewelry, a solid gold piece is the alternative to gold-filled or gold-plated jewelry. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. ... Recommended values for many properties of the elements, together with various references, are collected on these data pages. ... For information on how to read IPA transcriptions of English words see here. ... Professor Dimitri Mendeleev published the first Periodic Table of the Atomic Elements in 1869 based on properties which appeared with some regularity as he laid out the elements from lightest to heaviest. ... General Name, Symbol, Number iridium, Ir, 77 Chemical series transition metals Group, Period, Block 9, 6, d Appearance silvery white Atomic mass 192. ... The periodic table of the chemical elements (this version outdated on October 13, 2006) A chemical element, often called simply an element, is a substance that cannot be decomposed or transformed into other chemical substances by ordinary chemical processes. ... 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. ... In chemistry and physics, the atomic number (Z) is the number of protons found in the nucleus of an atom. ... The chemical elements labelled as synthetic are unstable, with a half-life so short (ranging from a fraction of millisecond to a few million years) relative to the age of the Earth that any atoms of that element that may have been present when the Earth formed have long since... Half-Life For a quantity subject to exponential decay, the half-life is the time required for the quantity to fall to half of its initial value. ... One millisecond is one-thousandth of a second. ... [edit] History Meitnerium was first synthesized on August 29, 1982 by a German research team led by Peter Armbruster and Gottfried Münzenberg at the Institute for Heavy Ion Research (Gesellschaft für Schwerionenforschung) in Darmstadt. The team bombarded a target of bismuth-209 with accelerated nuclei of iron-58. The synthesis of this element demonstrated that nuclear fusion techniques could be used to make new, heavy nuclei. This article or section should be merged with Timeline of chemical element discovery The story of the discoveries of the chemical elements is presented here in chronological order. ... August 29 is the 241st day of the year in the Gregorian Calendar (242nd in leap years), with 124 days remaining. ... 1982 (MCMLXXXII) was a common year starting on Friday of the Gregorian calendar. ... Peter Armbruster (born July 25 1931 in Dachau, Bavaria) is a physicist at the Gesellschaft für Schwerionenforschung (GSI) facility in Darmstadt, Germany, and is credited with discovering elements 108 Hassium, 109 Meitnerium, 110 (darmstadtium), 111 (roentgenium), and 112 (ununbium). ... Gottfried Münzenberg (born 1940 in Nordhausen, Germany) is a German physicist. ... 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. ... Darmstadt is a city in the Bundesland (federal state) of Hessen in Germany. ... General Name, Symbol, Number bismuth, Bi, 83 Chemical series poor metals Group, Period, Block 15, 6, p Appearance lustrous reddish white Atomic mass 208. ... 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. ... The deuterium-tritium (D-T) fusion reaction is considered the most promising for producing fusion power. ... The name meitnerium was suggested in honor of the Austrian physicist and mathematician Lise Meitner, but there was an element naming controversy as to what the elements from 101 to 109 were to be called; thus IUPAC adopted unnilennium (IPA: /ˌjuːnɪˈlɛniəm/, symbol Une) as a temporary, systematic element name. In 1997, however, the dispute was resolved and the current name was adopted. Lise Meitner ca. ... The names for the chemical elements 104 to 108 have been the subject of a major controversy starting in the 1960s which was only finally resolved in 1997. ... The International Union of Pure and Applied Chemistry (IUPAC) is an international non-governmental organization devoted to the advancement of chemistry. ... For information on how to read IPA transcriptions of English words see here. ... In chemistry, heavy transuranic elements receive a permanent trivial name and symbol only after their synthesis has been confirmed. ... 1997 (MCMXCVII) was a common year starting on Wednesday of the Gregorian calendar. ... [edit] See also Lise Meitner Lise Meitner ca. ... [edit] External links WebElements.com - Meitnerium Apsidium - Meitnerium Categories: Chemical elements | Transition metals

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	Meitnerium (Mt) - Chemical properties, Health and Environmental effects (142 words) None of meitnerium's chemistry has been researched, but it should resemble other elements of group 9, like iridium. Meitnerium does not have any known application and little is known about it. Meitnerium is not found free in the environment, since it is a synthetic element. Chemistry : Periodic Table : meitnerium : key information (194 words) Element 109, meitnerium, is a synthetic element that is not present in the environment at all. Isolation of an observable quantity of meitnerium has never been achieved, and may well never be. This is because meitnerium decays very rapidly through the emission of α-particles.
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