94
244 u
Pu
Plutonium
Actinide
Atomic Structure
Physical State
Group
N/A
Period
7
Block
f
Electron Configuration
[Rn] 5f⁶ 7s²
Physical Properties
Atomic Mass:
244 u
Electronegativity:
1.28
Atomic Radius:
187 pm
Ionization Energy:
6.026 eV
Density:
19.816 g/cm³
Melting Point:
912.5 K
Boiling Point:
3505 K
Historical Information
Discovered By:
Glenn T. Seaborg
Year Discovered:
1940