Cadmium vs Radon
| Property | Cd Cadmium | Rn Radon |
|---|---|---|
| Atomic number | 48 | 86 |
| Symbol | Cd | Rn |
| Name | Cadmium | Radon |
| Category | transition-metal | noble-gas |
| Standard Atomic Weight | 112.414 u | 222 u |
| Period | 5 | 6 |
| Group | 12 | 18 |
| Block | s | p |
| Phase at STP | solid | gas |
| Electron configuration | [Kr]5s24d10 | [Xe]6s24f145d106p6 |
| Oxidation states | [-2, 1, 2] | [0, 2, 6] |
| Electronegativity (Pauling) | 1.69 | N/A |
| Electron affinity | -0.7 eV | -0.7 eV |
| Density | 8690 kg/m³ | 9.73 kg/m³ |
| Melting point | 321.07 °C | -71.15 °C |
| Boiling point | 766.85 °C | -61.7 °C |
| Discovery year | 1817 | 1900 |