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Seleen
SeleenDownload de scheikundetoepassing om meer informatie over het chemische element te bekijken:
| Atoomnummer | 34 |
| Chemische groep | VIA |
| Periode | 4 |
| Massa | 78.96 |
| Latijnse naam | Selenium |
| Elektronenconfiguratie | [Ar]3d10 4s2 4p4 |
| Oxidatiestaat | -2, -1, 0, 1, 2, 3, 4, 5, 6 |