62
150.36 u
Sm
Samarium
Lanthanide
Atomic Structure
Physical State
Group
N/A
Period
6
Block
f
Electron Configuration
[Xe] 4f⁶ 6s²
Physical Properties
Atomic Mass:
150.36 u
Electronegativity:
1.17
Atomic Radius:
258 pm
Ionization Energy:
5.644 eV
Density:
7.52 g/cm³
Melting Point:
1345 K
Boiling Point:
2067 K
Historical Information
Discovered By:
Lecoq de Boisbaudran
Year Discovered:
1879