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1 janv. 1864 - Newlands The known elements (>60) were arranged in order of atomic weights and observed similarities between the first and ninth elements, the second and tenth elements etc. He proposed the 'Law of Octaves'.
Ajouté au bande de temps:
Contributions to Periodic table
By
Samuel Benjamin
13 févr. 2020
0
0
216
Date:
1 janv. 1864
Maintenaint
~ Il y a 161 ans
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