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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 ene 1864 año - 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
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Samuel Benjamin
13 feb 2020
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1 ene 1864 año
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~ 161 years ago
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