Gadolinium |
| Symbol | Gd |
|---|---|
| Latin name | Gadolinium |
| Atomic number | 64 |
| Period | 6 |
| Element category | Inner transition elements |
| Relative atomic mass | 157.25 |
| Group | III.B |
| Electronegativity | 1.1 |
| Oxidation numbers | 3 |
| Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f7 5d1 6s2 |
| Density [g/cm3] | 7.9 |
| State | Solid |
| Melting point [°C] | 1311 |
| Boiling point [°C] | 3266 |
| Atomic radius [pm] | 233 |
| Covalent radius [pm] | 196 |
| Thermal conductivity [W m-1K-1] | 10.6 |
| Heat capacity [J K-1g-1] | 0.236 |
| Discovery | 1880 |
| Vickers hardness [MPa] | 570 |
| Brinell hardness [MPa] | 180 |
| Young's modulus [GPa] | 55 |
| Electrical conductivity [S m-1] | 7.7 · 105 |
| Shear modulus [GPa] | 22 |
| 1.st ionization energy [eV] | 6.15 |
| 2.nd ionization energy [eV] | 12.095 |
| 3.rd ionization energy [eV] | 20.635 |
| Stable isotopes | 7 |
| Unstable isotopes | 11 |