← Back to the periodic table
54
Xe
131.29
Xenon
Noble gases · Group 18 · Period 5
Atomic properties
| Atomic number | 54 |
|---|---|
| Symbol | Xe |
| Standard atomic weight | 131.29 |
| Classification | Noble gases |
| Group | 18 |
| Period | 5 |
| Block | p-block |
| Electron configuration | [Kr] 4d10 5s2 5p6 |
| Electronegativity (Pauling) | 2.60 |
| Common oxidation states | 0, +2, +4, +6 |
Physical properties
| Phase at 20 °C | Gas |
|---|---|
| Density | 0.005894 g/cm³ |
| Melting point | -111.75 °C |
| Boiling point | -108.12 °C |
| Discovered | 1898 |
| CAS number | — |