Ruthenium vs Radon
| Property | Ru Ruthenium | Rn Radon |
|---|---|---|
| Atomic number | 44 | 86 |
| Symbol | Ru | Rn |
| Name | Ruthenium | Radon |
| Category | transition-metal | noble-gas |
| Standard Atomic Weight | 101.07 u | 222 u |
| Period | 5 | 6 |
| Group | 8 | 18 |
| Block | s | p |
| Phase at STP | solid | gas |
| Electron configuration | [Kr]5s14d7 | [Xe]6s24f145d106p6 |
| Oxidation states | [-4, -2, 1, 2, 3, 4, 5, 6, 7, 8] | [0, 2, 6] |
| Electronegativity (Pauling) | 2.2 | N/A |
| Electron affinity | 1.05 eV | -0.7 eV |
| Density | 1.210000e+4 kg/m³ | 9.73 kg/m³ |
| Melting point | 2333.85 °C | -71.15 °C |
| Boiling point | 4149.85 °C | -61.7 °C |
| Discovery year | 1828 | 1900 |