Attribute | Bromine × | Xenon × |
---|---|---|
Atomic mass (u) | 79.9 | 131.29 |
Standard state | Liquid | Gas |
Oxidation states |
|
|
Electron configuration | [Ar]4s²3d¹⁰4p⁵ | [Kr]5s²4d¹⁰5p⁶ |
Atomic radius (van der waals) (pm) | 183 | 216 |
Electronegativity (pauling scale) | 2.96 | 2.6 |
Electron affinity (eV) | 3.365 | - |
Ionization energy (eV) | 11.814 | 12.13 |
Boiling point (K) | 331.95 | 165.03 |
Melting point (K) | 265.95 | 161.36 |
Density (g/cm³) | 3.11 | 0.005887 |
Atomic number | 35 | 54 |
Group name | Halogen | Noble gas |
Symbol | Br | Xe |
Discovered (year) | 1826 | 1898 |