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Periodic Table of the Elements: Promethium

Periodic Table of the Elements: Promethium

Atomic Number: 61
Atomic Symbol: Pm
  Promethium
Atomic Weight: (145)
ElectronConfiguration: 2 · 8 · 1823 · 8 · 2

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

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