Zinc vs Francium
| Property | Zn Zinc | Fr Francium |
|---|---|---|
| Atomic number | 30 | 87 |
| Symbol | Zn | Fr |
| Name | Zinc | Francium |
| Category | transition-metal | alkali-metal |
| Standard Atomic Weight | 65.38 u | 223 u |
| Period | 4 | 7 |
| Group | 12 | 1 |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [Ar]4s23d10 | [Rn]7s1 |
| Oxidation states | [-2, 0, 1, 2] | [1] |
| Electronegativity (Pauling) | 1.65 | 0.7 |
| Electron affinity | -0.6 eV | 0.491 eV |
| Density | 7134 kg/m³ | 1870 kg/m³ |
| Melting point | 419.53 °C | 26.85 °C |
| Boiling point | 906.85 °C | -273.15 °C |
| Discovery year | 1746 | 1939 |