Americium vs Curium
Pick up to 3 elements and see how they stack up.
| Property | Americium | Curium |
|---|---|---|
| Atomic number | 95 | 96 |
| Atomic mass | 243 | 247 |
| Electronegativity | 1.3 | 1.3 |
| Melting point | 1,449 K (1,175.8 °C) | 1,613 K (1,339.8 °C) |
| Boiling point | 2,880 K (2,606.8 °C) | 3,383 K (3,109.8 °C) |
| Density | 12 g/cm³ | 13.51 g/cm³ |
| Atomic radius | 244 pm | 245 pm |
| Ionization energy | 5.993 eV | 6.02 eV |
| Discovered | 1944 | 1944 |
| Category | Actinide | Actinide |
| State at room temp. | Solid | Solid |
| Block | f | f |
| Group | — | — |
| Period | 7 | 7 |
| Valence electrons | 2 | 2 |
| Common charges | +3, +4, +5, +6 | +3 |
| Electron configuration | [Rn] 5f7 7s2 | [Rn] 5f7 6d1 7s2 |