Krypton vs Xenon
Pick up to 3 elements and see how they stack up.
| Property | Krypton | Xenon |
|---|---|---|
| Atomic number | 36 | 54 |
| Atomic mass | 83.798 | 131.29 |
| Electronegativity | 3 | 2.6 |
| Melting point | 115.78 K (-157.4 °C) | 161.4 K (-111.7 °C) |
| Boiling point | 119.93 K (-153.2 °C) | 165.03 K (-108.1 °C) |
| Density | 3.733 g/L | 5.894 g/L |
| Atomic radius | 202 pm | 216 pm |
| Ionization energy | 14 eV | 12.13 eV |
| Discovered | 1898 | 1898 |
| Category | Noble gas | Noble gas |
| State at room temp. | Gas | Gas |
| Block | p | p |
| Group | 18 | 18 |
| Period | 4 | 5 |
| Valence electrons | 8 | 8 |
| Common charges | 0 | 0 |
| Electron configuration | [Ar] 3d10 4s2 4p6 | [Kr] 4d10 5s2 5p6 |