65Tb
Terbium
Lanthanide
Properties of Terbium
- Atomic number (Z)
- 65
- Symbol
- Tb
- Name
- Terbium
- Atomic mass
- 158.925 u
- Period
- 6
- Group
- —
- Family
- Lanthanides (f-block)
- Classification
- Lanthanide
- Electron configuration
- [Xe] 4f⁹ 6s²
About Terbium
Terbium is a chemical element with symbol Tb and atomic number 65 (atomic mass of about 158.925 u). It is classified as a lanthanide on the periodic table.
On the periodic table, Terbium is located in period 6, outside the numbered groups (f-block), belonging to the lanthanides (f-block) family. An element's position reveals trends in its properties, such as atomic radius, electronegativity and metallic character.
The electron configuration of Terbium is [Xe] 4f⁹ 6s², which determines how it forms chemical bonds and takes part in reactions.