Radium
Alkaline earth metal| Atomic number | 88 |
|---|---|
| Category | Alkaline earth metal |
| Atomic mass | 226 |
| Electron configuration | [Rn]7s² |
| Oxidation states | +2 |
| Electronegativity | 0.9 |
| Melting point | 700 °C |
| Boiling point | 1,737 °C |
| Density | 5.5 g/cm³ |
| Crystal structure | Body-centred cubic |
| Group | 2 |
| Period | 7 |
| Block | s |
| Discovered | 1,898 |
| Crustal abundance | 0 ppm |