Attribute | Astatine × | Bromine × |
---|---|---|
Atomic mass (u) | 209.98715 | 79.9 |
Standard state | Solid | Liquid |
1↓Oxidation states |
|
|
Electron configuration | [Xe]6s²4f¹⁴5d¹⁰6p⁵ | [Ar]4s²3d¹⁰4p⁵ |
Atomic radius (van der waals) (pm) | 202 | 183 |
Electronegativity (pauling scale) | 2.2 | 2.96 |
Electron affinity (eV) | 2.8 | 3.365 |
Ionization energy (eV) | 9.5 | 11.814 |
Boiling point (K) | - | 331.95 |
Melting point (K) | 575 | 265.95 |
Density (g/cm³) | 7 | 3.11 |
Atomic number | 85 | 35 |
Group name | Halogen | Halogen |
Symbol | At | Br |
Discovered (year) | 1940 | 1826 |