| name | Radium |
| latin | Radium |
| french | Radium |
| german | Radium |
| symbol | Ra |
| proton number | 88 |
| atomic weight | 226.0254 |
| Pauling electronegativity | 0.9 |
| electronic configuration | [Rn] 7s2 1s22s22p63s23p63d104s24p64d105s25p64f145d106s26p67s2 |
| melting point | 973 K, 700°C, 1292°F |
| boiling point | 2010 K, 1737°C, 3158°F |
| group | 2 |
| period | 7 |
| state (by 20°C) | solid |
| oxidation states | +2 |
| Year of discovery | Discoverers |
| 1898 | Pierre Curie (1859-1906) Marie Curie-Sklodowská (1867-1934) |