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Elements

Actinium - Ac

The element Actinium, atomic number 89, is formed from nucelar decay, which results from .

      1. Name:
      2. Actinium
      1. Symbol:
      2. Ac
      1. Atomic number (protons):
      2. 89
      1. How created:
      2. nucelar decay
      1. Group (column):
      2. 3
      1. Period (row):
      2. 7
      1. Atomic weight:
      2. 227.000000000
      1. Melting point:
      2. 1323 K
      1. Boiling point:
      2. 3471 K
      1. Density:
      2. 10.0700000 g/cm3

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