Periodic Table of the Elements: Erbium — Infoplease.com

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Periodic Table of the Elements: Erbium
Atomic Number:	68
Atomic Symbol:	Er
	Erbium
Atomic Weight:	167.26
Electron Configuration:	2 · 8 · 18 30 · 8 · 2

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved.

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