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22 janv. 1829 - The Law of Triads was created. The law says that nature has created elements that are similar. The middle element is an average of the elements on either side when ordered by atomic weight.

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Periodic Table Timeline

ByJessica Maeda
16 déc. 2017
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Date:

22 janv. 1829
Maintenaint
~ Il y a 196 ans
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