Cobalt vs Bromine
| Property | Co Cobalt | Br Bromine |
|---|---|---|
| Atomic number | 27 | 35 |
| Symbol | Co | Br |
| Name | Cobalt | Bromine |
| Category | transition-metal | halogen |
| Standard Atomic Weight | 58.933194 u | 79.904 u |
| Period | 4 | 4 |
| Group | 9 | 17 |
| Block | s | p |
| Phase at STP | solid | liquid |
| Electron configuration | [Ar]4s23d7 | [Ar]4s23d104p5 |
| Oxidation states | [-3, -1, 0, 1, 2, 3, 4, 5] | [-1, 1, 2, 3, 4, 5, 7] |
| Electronegativity (Pauling) | 1.88 | 2.96 |
| Electron affinity | 0.661 eV | 3.3635 eV |
| Density | 8860 kg/m³ | 3102.8 kg/m³ |
| Melting point | 1494.85 °C | -7.2 °C |
| Boiling point | 2926.85 °C | 58.8 °C |
| Discovery year | 1735 | 1825 |