65
158.925 u
Tb
Terbium
Lanthanide
Atomic Structure
Physical State
Group
N/A
Period
6
Block
f
Electron Configuration
[Xe] 4f⁹ 6s²
Physical Properties
Atomic Mass:
158.925 u
Electronegativity:
1.2
Atomic Radius:
225 pm
Ionization Energy:
5.864 eV
Density:
8.229 g/cm³
Melting Point:
1629 K
Boiling Point:
3503 K
Historical Information
Discovered By:
Carl Gustaf Mosander
Year Discovered:
1843