Bromine vs Iodine
| Property | Br Bromine | I Iodine |
|---|---|---|
| Atomic number | 35 | 53 |
| Symbol | Br | I |
| Name | Bromine | Iodine |
| Category | halogen | halogen |
| Standard Atomic Weight | 79.904 u | 126.90447 u |
| Period | 4 | 5 |
| Group | 17 | 17 |
| Block | p | p |
| Phase at STP | liquid | solid |
| Electron configuration | [Ar]4s23d104p5 | [Kr]5s24d105p5 |
| Oxidation states | [-1, 1, 2, 3, 4, 5, 7] | [-1, 1, 2, 3, 4, 5, 6, 7] |
| Electronegativity (Pauling) | 2.96 | 2.66 |
| Electron affinity | 3.3635 eV | 3.059 eV |
| Density | 3102.8 kg/m³ | 4930 kg/m³ |
| Melting point | -7.2 °C | 113.7 °C |
| Boiling point | 58.8 °C | 184.4 °C |
| Discovery year | 1825 | 1811 |