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Arsen
ArsenDownload Chemistry-applikationen for at se flere oplysninger om det kemiske element:
| Atomnummer | 33 |
| Gruppe | VA |
| Periode | 4 |
| Vægt | 74.9216 |
| Latinsk navn | Arsenicum |
| Elektronkonfiguration | [Ar]3d10 4s2 4p3 |
| Oxidationstilstand | -3, -2, -1, 0, 1, 2, 3, 4, 5 |