58
Ce
Cerium
Lanthanide period 6 f-block discovered: 1803
As a chemical element
Properties of the atom — they do not depend on what substance it is part of.
- Atomic number
- 58
- Atomic mass
- 140.116 a.m.u.
- Electron configuration
- [Xe]6s2 4f1 5d1
- Electronegativity
- 1.12 on the Pauling scale
- Atomic radius
- 235 pm
- Ionization energy
- 5.539 eV
- Electron affinity
- 0.5 eV
- Oxidation states
- +4, +3
As a simple substance
Properties of the substance these atoms form under ordinary conditions.
- State at 25 °C
- Solid
- Melting point
- 1071 K (797,85 °C)
- Boiling point
- 3697 K (3 423,85 °C)
- Density
- 6.770 g/cm³