Actinium
- Number:
- 89
- Atomic Weight:
- 227.0
- Symbol:
- Ac
- Melting Point:
- 1,050° C /1,922° F
- Boiling Point:
- 3,200° C /5,792° F
- Density:
- 10.07 g/mL
- Group:
- Scandium Family
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