Nickel vs Radon
| Property | Ni Nickel | Rn Radon |
|---|---|---|
| Atomic number | 28 | 86 |
| Symbol | Ni | Rn |
| Name | Nickel | Radon |
| Category | transition-metal | noble-gas |
| Standard Atomic Weight | 58.6934 u | 222 u |
| Period | 4 | 6 |
| Group | 10 | 18 |
| Block | s | p |
| Phase at STP | solid | gas |
| Electron configuration | [Ar]4s23d8 | [Xe]6s24f145d106p6 |
| Oxidation states | [-2, -1, 0, 1, 2, 3, 4] | [0, 2, 6] |
| Electronegativity (Pauling) | 1.91 | N/A |
| Electron affinity | 1.156 eV | -0.7 eV |
| Density | 8912 kg/m³ | 9.73 kg/m³ |
| Melting point | 1454.85 °C | -71.15 °C |
| Boiling point | 2912.85 °C | -61.7 °C |
| Discovery year | 1751 | 1900 |