58 Ce
Lanthanide
Cerium
Most abundant rare earth.
Properties of Cerium
- Atomic number (Z)
- 58
- Symbol
- Ce
- Atomic mass
- 140.12 g/mol
- Category
- Lanthanide
- Group
- 3
- Period
- 6
- Electron configuration
- [Xe] 4f¹ 5d¹ 6s²
- Electronegativity (Pauling)
- 1.12
- Atomic radius
- 210 pm
- First ionization energy
- 534 kJ/mol
- Melting point
- 1068 K (794.9 °C)
- Boiling point
- 3716 K (3442.8 °C)
- Density
- 6.77 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1803