Oxygen vs Bromine
| Property | O Oxygen | Br Bromine |
|---|---|---|
| Atomic number | 8 | 35 |
| Symbol | O | Br |
| Name | Oxygen | Bromine |
| Category | nonmetal | halogen |
| Standard Atomic Weight | 15.9994 u | 79.904 u |
| Period | 2 | 4 |
| Group | 16 | 17 |
| Block | p | p |
| Phase at STP | gas | liquid |
| Electron configuration | [He]2s22p4 | [Ar]4s23d104p5 |
| Oxidation states | [-2, -1, 0, 1, 2] | [-1, 1, 2, 3, 4, 5, 7] |
| Electronegativity (Pauling) | 3.44 | 2.96 |
| Electron affinity | 1.4611 eV | 3.3635 eV |
| Density | 1.429 kg/m³ | 3102.8 kg/m³ |
| Melting point | -218.79 °C | -7.2 °C |
| Boiling point | -182.95 °C | 58.8 °C |
| Discovery year | 1771 | 1825 |