Ruthenium vs Xenon
| Property | Ru Ruthenium | Xe Xenon |
|---|---|---|
| Atomic number | 44 | 54 |
| Symbol | Ru | Xe |
| Name | Ruthenium | Xenon |
| Category | transition-metal | noble-gas |
| Standard Atomic Weight | 101.07 u | 131.293 u |
| Period | 5 | 5 |
| Group | 8 | 18 |
| Block | s | p |
| Phase at STP | solid | gas |
| Electron configuration | [Kr]5s14d7 | [Kr]5s24d105p6 |
| Oxidation states | [-4, -2, 1, 2, 3, 4, 5, 6, 7, 8] | [0, 2, 4, 6, 8] |
| Electronegativity (Pauling) | 2.2 | 2.6 |
| Electron affinity | 1.05 eV | -0.8 eV |
| Density | 1.210000e+4 kg/m³ | 5.887 kg/m³ |
| Melting point | 2333.85 °C | -111.79 °C |
| Boiling point | 4149.85 °C | -108.1 °C |
| Discovery year | 1828 | 1898 |