Tin vs Astatine
| Property | Sn Tin | At Astatine |
|---|---|---|
| Atomic number | 50 | 85 |
| Symbol | Sn | At |
| Name | Tin | Astatine |
| Category | post-transition-metal | halogen |
| Standard Atomic Weight | 118.71 u | 210 u |
| Period | 5 | 6 |
| Group | 14 | 17 |
| Block | p | p |
| Phase at STP | solid | solid |
| Electron configuration | [Kr]5s24d105p2 | [Xe]6s24f145d106p5 |
| Oxidation states | [-4, -3, -2, -1, 0, 1, 2, 3, 4] | [-1, 1, 3, 5, 7] |
| Electronegativity (Pauling) | 1.96 | 2.2 |
| Electron affinity | 1.112 eV | 2.391 eV |
| Density | 7287 kg/m³ | 7000 kg/m³ |
| Melting point | 231.93 °C | 301.85 °C |
| Boiling point | 2601.85 °C | -273.15 °C |
| Discovery year | N/A | 1940 |