Actinium - Ac
The element Actinium, atomic number 89, is formed from nucelar decay, which results from .
- Name:
- Actinium
- Symbol:
- Ac
- Atomic number (protons):
- 89
- How created:
- nucelar decay
- Group (column):
- 3
- Period (row):
- 7
- Atomic weight:
- 227.000000000
- Melting point:
- 1323 K
- Boiling point:
- 3471 K
- Density:
- 10.0700000 g/cm3
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