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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'.

Aggiunto al nastro di tempo:

Contributions to Periodic table

BySamuel Benjamin
13 feb 2020

Data:

1 gen 1864 anni
Adesso
~ 160 years ago
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