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14 sept. 1869 - Dmitri Mendeleev - Classification of Elements (1869)

Description:

Mendeleev classified elements into 7 groups according to their atomic mass and found a correlation between atomic mass and the properties of an element. He arranged elements into a diagram called the Periodic Table. The table created by Mendeleev also alotted spaces for elements that hadn't been discovered yet and were found later in history.

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Atomic Theory Timeline

BySANYA SHETTY
9 oct. 2018
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Date:

14 sept. 1869
Maintenaint
~ Il y a 156 ans
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