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Neptunium
NeptuniumLadda ner Chemistry-applikationen för att se mer information om det kemiska elementet:
| Atomnummer | 93 |
| Periodiska systemets grupper | VIIB |
| Periodiska systemets perioder | 7 |
| Massa | 237 |
| Latinskt namn | Neptunium |
| Elektronkonfiguration | [Rn]5f4 6d7s2 |
| Oxidationstillstånd | 0, 2, 3, 4, 5, 6, 7 |