Lanthanum vs Cerium
Pick up to 3 elements and see how they stack up.
| Property | Lanthanum | Cerium |
|---|---|---|
| Atomic number | 57 | 58 |
| Atomic mass | 138.91 | 140.12 |
| Electronegativity | 1.1 | 1.12 |
| Melting point | 1,193 K (919.8 °C) | 1,068 K (794.8 °C) |
| Boiling point | 3,737 K (3,463.8 °C) | 3,716 K (3,442.8 °C) |
| Density | 6.162 g/cm³ | 6.77 g/cm³ |
| Atomic radius | 240 pm | 235 pm |
| Ionization energy | 5.577 eV | 5.539 eV |
| Discovered | 1839 | 1803 |
| Category | Lanthanide | Lanthanide |
| State at room temp. | Solid | Solid |
| Block | f | f |
| Group | — | — |
| Period | 6 | 6 |
| Valence electrons | 2 | 2 |
| Common charges | +3 | +3, +4 |
| Electron configuration | [Xe] 5d1 6s2 | [Xe] 4f1 5d1 6s2 |