Calcium vs Xenon
| Property | Ca Calcium | Xe Xenon |
|---|---|---|
| Atomic number | 20 | 54 |
| Symbol | Ca | Xe |
| Name | Calcium | Xenon |
| Category | alkaline-earth-metal | noble-gas |
| Standard Atomic Weight | 40.078 u | 131.293 u |
| Period | 4 | 5 |
| Group | 2 | 18 |
| Block | s | p |
| Phase at STP | solid | gas |
| Electron configuration | [Ar]4s2 | [Kr]5s24d105p6 |
| Oxidation states | [1, 2] | [0, 2, 4, 6, 8] |
| Electronegativity (Pauling) | 1 | 2.6 |
| Electron affinity | 0.0245 eV | -0.8 eV |
| Density | 1540 kg/m³ | 5.887 kg/m³ |
| Melting point | 841.85 °C | -111.79 °C |
| Boiling point | 1483.85 °C | -108.1 °C |
| Discovery year | 1808 | 1898 |