Europium vs Radium
| Property | Eu Europium | Ra Radium |
|---|---|---|
| Atomic number | 63 | 88 |
| Symbol | Eu | Ra |
| Name | Europium | Radium |
| Category | lanthanide | alkaline-earth-metal |
| Standard Atomic Weight | 151.964 u | 226 u |
| Period | 6 | 7 |
| Group | N/A | 2 |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [Xe]6s24f7 | [Rn]7s2 |
| Oxidation states | [0, 2, 3] | [2] |
| Electronegativity (Pauling) | N/A | 0.9 |
| Electron affinity | 0.116 eV | 0.096 eV |
| Density | 5240 kg/m³ | 5000 kg/m³ |
| Melting point | 821.85 °C | 699.85 °C |
| Boiling point | 1528.85 °C | 1139.85 °C |
| Discovery year | 1896 | 1898 |