Polonium vs Radon
| Property | Po Polonium | Rn Radon |
|---|---|---|
| Atomic number | 84 | 86 |
| Symbol | Po | Rn |
| Name | Polonium | Radon |
| Category | metalloid | noble-gas |
| Standard Atomic Weight | 209 u | 222 u |
| Period | 6 | 6 |
| Group | 16 | 18 |
| Block | p | p |
| Phase at STP | solid | gas |
| Electron configuration | [Xe]6s24f145d106p4 | [Xe]6s24f145d106p6 |
| Oxidation states | [-2, 2, 4, 5, 6] | [0, 2, 6] |
| Electronegativity (Pauling) | 2 | N/A |
| Electron affinity | 1.9 eV | -0.7 eV |
| Density | 9320 kg/m³ | 9.73 kg/m³ |
| Melting point | 253.85 °C | -71.15 °C |
| Boiling point | 961.85 °C | -61.7 °C |
| Discovery year | 1898 | 1900 |