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Protaktinium
ProtaktiniumLataa kemian sovellus nähdäksesi lisätietoja kemiallisesta alkuaineesta:
| Järjestysluku | 91 |
| Ryhmä | VB |
| Jakso | 7 |
| Massa | 231.03587 |
| Latinalainen nimi | Protactinium |
| Elektronikonfiguraatio | [Rn]5f2 6d7s2 |
| Hapetustila | 0, 2, 3, 4, 5 |