Symbol
Tb
Atomic Number
65
Atomic Mass
158.92535
Protons
65
Neutrons
93
Electrons
65
Type
Lanthanide
Isotopes
Terbium-159
Discovery Year
1843
Discovered By
Johan Gadolin
Group
3
Period
6
Boiling Point
3166°C
Melting Point
1356°C
Electron Configuration
[Xe] 6s² 4f⁹
Density (g/cm³)
8.23
Crystal Structure
Hexagonal
Magnetism
Paramagnetic
Abundance in Earth's Crust
0.0005%
Phase at Room Temperature
Solid