Xenon vs Thallium
| Property | Xe Xenon | Tl Thallium |
|---|---|---|
| Atomic number | 54 | 81 |
| Symbol | Xe | Tl |
| Name | Xenon | Thallium |
| Category | noble-gas | post-transition-metal |
| Standard Atomic Weight | 131.293 u | 204.3835 u |
| Period | 5 | 6 |
| Group | 18 | 13 |
| Block | p | p |
| Phase at STP | gas | solid |
| Electron configuration | [Kr]5s24d105p6 | [Xe]6s24f145d106p1 |
| Oxidation states | [0, 2, 4, 6, 8] | [-5, -2, -1, 1, 2, 3] |
| Electronegativity (Pauling) | 2.6 | 1.62 |
| Electron affinity | -0.8 eV | 0.377 eV |
| Density | 5.887 kg/m³ | 1.180000e+4 kg/m³ |
| Melting point | -111.79 °C | 303.85 °C |
| Boiling point | -108.1 °C | 1472.85 °C |
| Discovery year | 1898 | 1861 |