Zinc vs Rubidium
| Property | Zn Zinc | Rb Rubidium |
|---|---|---|
| Atomic number | 30 | 37 |
| Symbol | Zn | Rb |
| Name | Zinc | Rubidium |
| Category | transition-metal | alkali-metal |
| Standard Atomic Weight | 65.38 u | 85.4678 u |
| Period | 4 | 5 |
| Group | 12 | 1 |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [Ar]4s23d10 | [Kr]5s1 |
| Oxidation states | [-2, 0, 1, 2] | [-1, 1] |
| Electronegativity (Pauling) | 1.65 | 0.82 |
| Electron affinity | -0.6 eV | 0.4859 eV |
| Density | 7134 kg/m³ | 1530 kg/m³ |
| Melting point | 419.53 °C | 39.31 °C |
| Boiling point | 906.85 °C | 687.85 °C |
| Discovery year | 1746 | 1861 |