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Periodic Table of the Elements: Actinium

Periodic Table of the Elements: Actinium

Atomic Number: 89
Atomic Symbol: Ac
  Actinium
Atomic Weight: (227)
ElectronConfiguration: 2 · 8 · 1832 · 189 · 2

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

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