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Aktinium
AktiniumMuat turun aplikasi Kimia untuk melihat maklumat lanjut tentang unsur kimia:
| Nombor atom | 89 |
| Kumpulan | IIIB |
| Kala | 7 |
| Jisim | 227 |
| Nama latin | Actinium |
| Konfigurasi elektron | [Rn]6d7s2 |
| Keadaan pengoksidaan | 0, 2, 3 |