Europium |
| Symbol | Eu |
|---|---|
| Latin name | Europium |
| Atomic number | 63 |
| Period | 6 |
| Element category | Inner transition elements |
| Relative atomic mass | 151.965 |
| Group | III.B |
| Electronegativity | 1.0 |
| Oxidation numbers | 2, 3 |
| Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f7 5d0 6s2 |
| Density [g/cm3] | 5.243 |
| State | Solid |
| Melting point [°C] | 822 |
| Boiling point [°C] | 1597 |
| Atomic radius [pm] | 231 |
| Thermal conductivity [W m-1K-1] | 13.9 |
| Heat capacity [J K-1g-1] | 0.182 |
| Discovery | 1896 |
| Vickers hardness [MPa] | 167 |
| Young's modulus [GPa] | 18 |
| Electrical conductivity [S m-1] | 1.1 · 106 |
| Shear modulus [GPa] | 7.9 |
| 1.st ionization energy [eV] | 5.6704 |
| 2.nd ionization energy [eV] | 11.245 |
| 3.rd ionization energy [eV] | 24.926 |
| Stable isotopes | 2 |
| Unstable isotopes | 19 |