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Radium
RadiumDownload Chemistry-applikationen for at se flere oplysninger om det kemiske element:
| Atomnummer | 88 |
| Gruppe | IIA |
| Periode | 7 |
| Vægt | 226 |
| Latinsk navn | Radium |
| Elektronkonfiguration | [Rn]7s2 |
| Oxidationstilstand | 0, 2 |