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Calcium
CalciumDownload Chemistry-applikationen for at se flere oplysninger om det kemiske element:
| Atomnummer | 20 |
| Gruppe | IIA |
| Periode | 4 |
| Vægt | 40.078 |
| Latinsk navn | Calcium |
| Elektronkonfiguration | [Ar]4s2 |
| Oxidationstilstand | 0, 1, 2 |