Samarium vs Europium
| Property | Sm Samarium | Eu Europium |
|---|---|---|
| Atomic number | 62 | 63 |
| Symbol | Sm | Eu |
| Name | Samarium | Europium |
| Category | lanthanide | lanthanide |
| Standard Atomic Weight | 150.36 u | 151.964 u |
| Period | 6 | 6 |
| Group | N/A | N/A |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [Xe]6s24f6 | [Xe]6s24f7 |
| Oxidation states | [0, 1, 2, 3] | [0, 2, 3] |
| Electronegativity (Pauling) | 1.17 | N/A |
| Electron affinity | 0.156 eV | 0.116 eV |
| Density | 7520 kg/m³ | 5240 kg/m³ |
| Melting point | 1073.85 °C | 821.85 °C |
| Boiling point | 1793.85 °C | 1528.85 °C |
| Discovery year | 1878 | 1896 |