Mercury vs Thallium
Pick up to 3 elements and see how they stack up.
| Property | Mercury | Thallium |
|---|---|---|
| Atomic number | 80 | 81 |
| Atomic mass | 200.59 | 204.38 |
| Electronegativity | 2 | 1.62 |
| Melting point | 234.32 K (-38.8 °C) | 577 K (303.8 °C) |
| Boiling point | 629.88 K (356.7 °C) | 1,746 K (1,472.8 °C) |
| Density | 13.534 g/cm³ | 11.85 g/cm³ |
| Atomic radius | 209 pm | 196 pm |
| Ionization energy | 10.438 eV | 6.108 eV |
| Discovered | Ancient | 1861 |
| Category | Transition metal | Post-transition metal |
| State at room temp. | Liquid | Solid |
| Block | d | p |
| Group | 12 | 13 |
| Period | 6 | 6 |
| Valence electrons | 2 | 3 |
| Common charges | +1, +2 | +1, +3 |
| Electron configuration | [Xe] 4f14 5d10 6s2 | [Xe] 4f14 5d10 6s2 6p1 |