58Solid
Ce 140.116 Atomic mass · uLanthanides
Cerium
Cerium is a chemical element with symbol Ce and atomic number 58. It is a soft, silvery, ductile metal which easily oxidizes in air. Cerium was named after the dwarf planet Ceres (itself named after the Roman goddess of agriculture).
Discovery 1803 (Martin Heinrich Klaproth)
K2L8M18N19O9P2
Physical properties
Values for the element in its standard state.
- Density
- 6.689g/cm³
- Melting point
- 1,071K
- Boiling point
- 3,633K
- Atomic radius
- Not available
- Bonding type
- Metallic
- Molar heat
- 26.94J/(mol·K)
Inside the atom
Electron arrangement and the energy behind its behavior.
Full electron configuration
1s, 2 electrons; 2s, 2 electrons; 2p, 6 electrons; 3s, 2 electrons; 3p, 6 electrons; 3d, 10 electrons; 4s, 2 electrons; 4p, 6 electrons; 4d, 10 electrons; 5s, 2 electrons; 5p, 6 electrons; 4f, 1 electrons; 5d, 1 electrons; 6s, 2 electrons;
[Xe] represents 54 core electrons. The full view shows them explicitly.
58 electrons Orbital order preserved from source
- Electronegativity
- 1.12Pauling scale
- First ionization energy
- 534kJ/mol
- Electron affinity
- 50kJ/mol
- Van der Waals radius
- Not available
Ce CeriumAtomic number 58
534kJ/mol
Atomic numberGaps indicate unavailable data
About cerium
- Appearance
- Silvery white
- Discovery
- 1803 (Martin Heinrich Klaproth)
- Data source
- Read the reference
A missing value means it is unavailable in this reference dataset. Values can vary with measurement method and conditions.