Yttrium vs Curium
| Property | Y Yttrium | Cm Curium |
|---|---|---|
| Atomic number | 39 | 96 |
| Symbol | Y | Cm |
| Name | Yttrium | Curium |
| Category | transition-metal | actinide |
| Standard Atomic Weight | 88.90584 u | 247 u |
| Period | 5 | 7 |
| Group | 3 | N/A |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [Kr]5s24d1 | [Rn]7s25f76d1 |
| Oxidation states | [0, 1, 2, 3] | [3, 4, 5, 6] |
| Electronegativity (Pauling) | 1.22 | 1.3 |
| Electron affinity | 0.307 eV | 0.277 eV |
| Density | 4470 kg/m³ | 1.351000e+4 kg/m³ |
| Melting point | 1521.85 °C | 1344.85 °C |
| Boiling point | 3344.85 °C | 3126.85 °C |
| Discovery year | 1794 | 1944 |