Terbium (Tb)

A fascinating lanthanide element.

Terbium is element 65 on the periodic table.

Element properties

Atomic number
65
Symbol
Tb
Atomic mass
158.93 u
Category
Lanthanide
Period
6
Group
Not assigned
Block
f
State
Solid
Electron configuration
[Xe] 4f9 6s2
Electronegativity (Pauling)
1.1
Density
8.23 g/cm³
Melting point
1356 °C
Boiling point
3230 °C