Xenon vs Radium
| Property | Xe Xenon | Ra Radium |
|---|---|---|
| Atomic number | 54 | 88 |
| Symbol | Xe | Ra |
| Name | Xenon | Radium |
| Category | noble-gas | alkaline-earth-metal |
| Standard Atomic Weight | 131.293 u | 226 u |
| Period | 5 | 7 |
| Group | 18 | 2 |
| Block | p | s |
| Phase at STP | gas | solid |
| Electron configuration | [Kr]5s24d105p6 | [Rn]7s2 |
| Oxidation states | [0, 2, 4, 6, 8] | [2] |
| Electronegativity (Pauling) | 2.6 | 0.9 |
| Electron affinity | -0.8 eV | 0.096 eV |
| Density | 5.887 kg/m³ | 5000 kg/m³ |
| Melting point | -111.79 °C | 699.85 °C |
| Boiling point | -108.1 °C | 1139.85 °C |
| Discovery year | 1898 | 1898 |