100
257 u
Fm
Fermium
Actinide
Atomic Structure
Physical State
Group
N/A
Period
7
Block
f
Electron Configuration
[Rn] 5f¹² 7s²
Physical Properties
Atomic Mass:
257 u
Electronegativity:
1.3
Atomic Radius:
N/A
Ionization Energy:
6.5 eV
Density:
N/A
Melting Point:
1800 K
Boiling Point:
N/A
Historical Information
Discovered By:
Lawrence Berkeley National Laboratory
Year Discovered:
1952