Erbium (Er)
A fascinating lanthanide element.
Erbium is element 68 on the periodic table.
Element properties
- Atomic number
- 68
- Symbol
- Er
- Atomic mass
- 167.26 u
- Category
- Lanthanide
- Period
- 6
- Group
- Not assigned
- Block
- f
- State
- Solid
- Electron configuration
- [Xe] 4f12 6s2
- Electronegativity (Pauling)
- 1.24
- Density
- 9.066 g/cm³
- Melting point
- 1529 °C
- Boiling point
- 2868 °C