Atomic number:109

Group numbers:9

Period:7

Electronic configuration:[Rn] 5f¹⁴ 6d⁷ 7s²

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Relative atomic mass:[276]

 

Meitnerium was discovered by Peter Armbruster, Gottfried Münzenber (DE) and their co-workers at the Heavy Ion Research Laboratory (Gesellschaft für 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.

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