ASCII PERIODIC TABLE OF THE ELEMENTS
Mt
Relative atomic mass: [276]
English: Meitnerium
French: Meitnerium
Croatian: Meitnerij
German: Meitnerium
Italian: Meitnerio
Spanish: Meitnerio
Atomic number: 109
Group numbers: 9
Period: 7
Standard state (20 oC): solid
Discovery: 1982 Peter Armbruster, Gottfried Munzenber & GSI Darmstadt (DE)
Meitnerium was discovered by Peter Armbruster, Gottfried Munzenber (DE) and their co-workers at the Heavy Ion Research Laboratory (Gesellschaft fur Schwerionenforschung, GSI) in Darmstadt, Germany in 1982. Named in honour of Lise Meitner, the Austrian physicist. It is a synthetic radioactive metal. Meitnerium was produced by bombarding bismuth-209 with iron-58.
Electronic configuration: [Rn] 5f14 6d7 7s2
Formal oxidation number:
Atomic radius: - pm
Electronegativities: -
Thermal conductivity: - W/(m K)
Electrical resistivity (20 oC): - microOhm cm
Melting point: - oC
Boiling point: - oC
Heat of fusion: - kJ/mol
Heat of vaporization: - kJ/mol
Heat of atomization: - kJ/mol
108Hs <= 109Mt => 110Ds
ASCII Periodic Table of the Elements
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6 Jan. 2020
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