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jan 1, 1869 - Dmitri Mendeleev
Description:
Arranged elements into 7 groups with similar properties; discovered properties of elements “were periodic functions of their atomic weights” (became known as the Periodic Law)
Added to timeline:
Atomic Theory timeline
By
Spencer Knight
14 Feb 2019
0
0
373
Date:
jan 1, 1869
Now
~ 156 years ago
Images:
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