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| 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
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| 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 |
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|
Discoverer
| Year of discovery |
Discoverers |
| 1898 |
Pierre Curie (1859-1906)
Marie Curie-Sklodowská (1867-1934) |
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Czech version