Meitnerium was discovered by Peter Armbruster, Gottfried Münzenber and their co-workers.
at 1982 in Gesellschaft für Schwerionenforschung (GSI) in Darmstadt, Germany.. Origin of name: named after Lise "Meitner",
the Austrian physicist.
Atomic Number: 109
Atomic Weight: 278
Melting Point: Unknown
Boiling Point: Unknown
Density: Unknown
Phase at Room Temperature:Solid
Element Classification: Metal
Period Number: 7 Group Number: 9 Group Name: none