Indium vs Thallium
Pick up to 3 elements and see how they stack up.
| Property | Indium | Thallium |
|---|---|---|
| Atomic number | 49 | 81 |
| Atomic mass | 114.82 | 204.38 |
| Electronegativity | 1.78 | 1.62 |
| Melting point | 429.75 K (156.6 °C) | 577 K (303.8 °C) |
| Boiling point | 2,345 K (2,071.8 °C) | 1,746 K (1,472.8 °C) |
| Density | 7.31 g/cm³ | 11.85 g/cm³ |
| Atomic radius | 193 pm | 196 pm |
| Ionization energy | 5.786 eV | 6.108 eV |
| Discovered | 1863 | 1861 |
| Category | Post-transition metal | Post-transition metal |
| State at room temp. | Solid | Solid |
| Block | p | p |
| Group | 13 | 13 |
| Period | 5 | 6 |
| Valence electrons | 3 | 3 |
| Common charges | +3 | +1, +3 |
| Electron configuration | [Kr] 4d10 5s2 5p1 | [Xe] 4f14 5d10 6s2 6p1 |