Cerium |
| Symbol | Ce |
|---|---|
| Latin name | Cerium |
| Atomic number | 58 |
| Period | 6 |
| Element category | Inner transition elements |
| Relative atomic mass | 140.115 |
| Group | III.B |
| Electronegativity | 1.1 |
| Oxidation numbers | 3, 4 |
| Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f1 5d1 6s2 |
| Density [g/cm3] | 6.7 |
| State | Solid |
| Melting point [°C] | 799 |
| Boiling point [°C] | 3426 |
| Covalent radius [pm] | 165 |
| Thermal conductivity [W m-1K-1] | 11.4 |
| Heat capacity [J K-1g-1] | 0.19 |
| Discovery | 1803 |
| Hardness [Mohs scale] | 2.5 |
| Vickers hardness [MPa] | 270 |
| Brinell hardness [MPa] | 412 |
| Young's modulus [GPa] | 34 |
| Electrical conductivity [S m-1] | 1.4 · 106 |
| Shear modulus [GPa] | 14 |
| 1.st ionization energy [eV] | 5.5387 |
| 2.nd ionization energy [eV] | 10.851 |
| 3.rd ionization energy [eV] | 20.2 |
| Stable isotopes | 4 |
| Unstable isotopes | 15 |