Gadolinium vs Terbium
Pick up to 3 elements and see how they stack up.
| Property | Gadolinium | Terbium |
|---|---|---|
| Atomic number | 64 | 65 |
| Atomic mass | 157.25 | 158.93 |
| Electronegativity | 1.2 | 1.2 |
| Melting point | 1,585 K (1,311.8 °C) | 1,629 K (1,355.8 °C) |
| Boiling point | 3,546 K (3,272.8 °C) | 3,503 K (3,229.8 °C) |
| Density | 7.9 g/cm³ | 8.23 g/cm³ |
| Atomic radius | 237 pm | 221 pm |
| Ionization energy | 6.15 eV | 5.864 eV |
| Discovered | 1880 | 1843 |
| Category | Lanthanide | Lanthanide |
| State at room temp. | Solid | Solid |
| Block | f | f |
| Group | — | — |
| Period | 6 | 6 |
| Valence electrons | 2 | 2 |
| Common charges | +3 | +3 |
| Electron configuration | [Xe] 4f7 5d1 6s2 | [Xe] 4f9 6s2 |