63 Eu
Lanthanide
Europium
Phosphor in red TV screens.
Properties of Europium
- Atomic number (Z)
- 63
- Symbol
- Eu
- Atomic mass
- 151.96 g/mol
- Category
- Lanthanide
- Group
- 3
- Period
- 6
- Electron configuration
- [Xe] 4f⁷ 6s²
- Electronegativity (Pauling)
- 1.2
- Atomic radius
- 231 pm
- First ionization energy
- 547 kJ/mol
- Melting point
- 1099 K (825.9 °C)
- Boiling point
- 1802 K (1528.8 °C)
- Density
- 5.243 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1901