Attribute | Chlorine × | Xenon × |
---|---|---|
Atomic mass (u) | 35.45 | 131.29 |
Standard state | Gas | Gas |
Oxidation states |
|
|
Electron configuration | [Ne]3s²3p⁵ | [Kr]5s²4d¹⁰5p⁶ |
1↑Atomic radius (van der waals) (pm) | 175 | 216 |
Electronegativity (pauling scale) | 3.16 | 2.6 |
Electron affinity (eV) | 3.617 | - |
Ionization energy (eV) | 12.968 | 12.13 |
Boiling point (K) | 239.11 | 165.03 |
Melting point (K) | 171.65 | 161.36 |
Density (g/cm³) | 0.003214 | 0.005887 |
Atomic number | 17 | 54 |
Group name | Halogen | Noble gas |
Symbol | Cl | Xe |
Discovered (year) | 1774 | 1898 |