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Aktinium
AktiniumLaai Chemie-toepassing af om meer inligting oor die chemiese element te sien:
| Atoomgetal | 89 |
| Periodieke tabel groep | IIIB |
| Periode | 7 |
| Massa | 227 |
| Latynse naam | Actinium |
| Elektronkonfigurasie | [Rn]6d7s2 |
| Oksidasie toestand | 0, 2, 3 |