Sodium vs Bromine
| Property | Na Sodium | Br Bromine |
|---|---|---|
| Atomic number | 11 | 35 |
| Symbol | Na | Br |
| Name | Sodium | Bromine |
| Category | alkali-metal | halogen |
| Standard Atomic Weight | 22.989769 u | 79.904 u |
| Period | 3 | 4 |
| Group | 1 | 17 |
| Block | s | p |
| Phase at STP | solid | liquid |
| Electron configuration | [Ne]3s1 | [Ar]4s23d104p5 |
| Oxidation states | [-1, 0, 1] | [-1, 1, 2, 3, 4, 5, 7] |
| Electronegativity (Pauling) | 0.93 | 2.96 |
| Electron affinity | 0.5479 eV | 3.3635 eV |
| Density | 970 kg/m³ | 3102.8 kg/m³ |
| Melting point | 97.8 °C | -7.2 °C |
| Boiling point | 882.85 °C | 58.8 °C |
| Discovery year | 1807 | 1825 |