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Kalsium
KalsiumLataa kemian sovellus nähdäksesi lisätietoja kemiallisesta alkuaineesta:
| Järjestysluku | 20 |
| Ryhmä | IIA |
| Jakso | 4 |
| Massa | 40.078 |
| Latinalainen nimi | Calcium |
| Elektronikonfiguraatio | [Ar]4s2 |
| Hapetustila | 0, 1, 2 |