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Prometium
PrometiumLadda ner Chemistry-applikationen för att se mer information om det kemiska elementet:
| Atomnummer | 61 |
| Periodiska systemets grupper | VIIB |
| Periodiska systemets perioder | 6 |
| Massa | 145 |
| Latinskt namn | Promethium |
| Elektronkonfiguration | [Xe]4f5 6s2 |
| Oxidationstillstånd | 0, 2, 3 |