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Dec 1, 2009
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Periodic Table of the Elements: Lanthanum
Atomic Number:57
Atomic Symbol:La
 Lanthanum
Atomic Weight:138.9055
Electron
Configuration:
2 · 8 · 18
18 · 9 · 2
periodic table

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

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