Attribute | Krypton × | Xenon × |
---|---|---|
Standard state | Gas | Gas |
Electron configuration | [Ar]4s²3d¹⁰4p⁶ | [Kr]5s²4d¹⁰5p⁶ |
Atomic mass (u) | 83.8 | 131.29 |
Electronegativity (pauling scale) | 3 | 2.6 |
Oxidation states |
|
|
Ionization energy (eV) | 14 | 12.13 |
Atomic radius (van der waals) (pm) | 202 | 216 |
Boiling point (K) | 119.93 | 165.03 |
Melting point (K) | 115.79 | 161.36 |
Density (g/cm³) | 0.003733 | 0.005887 |
Atomic number | 36 | 54 |
Group name | Noble gas | Noble gas |
1↑Discovered (year) | 1898 | 1898 |
Symbol | Kr | Xe |