Chlorine vs Bromine
Pick up to 3 elements and see how they stack up.
| Property | Chlorine | Bromine |
|---|---|---|
| Atomic number | 17 | 35 |
| Atomic mass | 35.45 | 79.904 |
| Electronegativity | 3.16 | 2.96 |
| Melting point | 171.6 K (-101.5 °C) | 265.8 K (-7.3 °C) |
| Boiling point | 239.11 K (-34 °C) | 332 K (58.9 °C) |
| Density | 3.214 g/L | 3.103 g/cm³ |
| Atomic radius | 175 pm | 183 pm |
| Ionization energy | 12.968 eV | 11.814 eV |
| Discovered | 1774 | 1826 |
| Category | Halogen | Halogen |
| State at room temp. | Gas | Liquid |
| Block | p | p |
| Group | 17 | 17 |
| Period | 3 | 4 |
| Valence electrons | 7 | 7 |
| Common charges | −1 | −1 |
| Electron configuration | [Ne] 3s2 3p5 | [Ar] 3d10 4s2 4p5 |