Yttrium vs Francium
| Property | Y Yttrium | Fr Francium |
|---|---|---|
| Atomic number | 39 | 87 |
| Symbol | Y | Fr |
| Name | Yttrium | Francium |
| Category | transition-metal | alkali-metal |
| Standard Atomic Weight | 88.90584 u | 223 u |
| Period | 5 | 7 |
| Group | 3 | 1 |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [Kr]5s24d1 | [Rn]7s1 |
| Oxidation states | [0, 1, 2, 3] | [1] |
| Electronegativity (Pauling) | 1.22 | 0.7 |
| Electron affinity | 0.307 eV | 0.491 eV |
| Density | 4470 kg/m³ | 1870 kg/m³ |
| Melting point | 1521.85 °C | 26.85 °C |
| Boiling point | 3344.85 °C | -273.15 °C |
| Discovery year | 1794 | 1939 |