Symbol
Mt
Atomic Number
109
Atomic Mass
276
Protons
109
Neutrons
167
Electrons
109
Type
Transition Metal
Isotopes
Meitnerium-276
Discovery Year
1982
Discovered By
G. N. Flerov and others
Group
9
Period
7
Boiling Point
Unknown
Melting Point
Unknown
Electron Configuration
[Rn] 7s² 5f¹⁴ 6d⁷
Density (g/cm³)
16.0
Crystal Structure
Unknown
Magnetism
Unknown
Abundance in Earth's Crust
Trace
Phase at Room Temperature
Solid