Bromine
Halogen| Atomic number | 35 |
|---|---|
| Category | Halogen |
| Atomic mass | 79.904 |
| Electron configuration | [Ar]3d¹⁰ 4s² 4p⁵ |
| Oxidation states | −1 … +5 |
| Electronegativity | 2.96 |
| Melting point | -7.2 °C |
| Boiling point | 58.8 °C |
| Density | 3.12 g/cm³ |
| Crystal structure | Orthorhombic (solid) |
| Group | 17 |
| Period | 4 |
| Block | p |
| Discovered | 1,826 |
| Crustal abundance | 2.4 ppm |