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1 gen 1864 anni - 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'.

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Contributions to Periodic table

BySamuel Benjamin
13 feb 2020
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1 gen 1864 anni
Adesso
~ 161 years ago
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