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18 фев 1862 г. - Dechancourtois: First person to list the known elements in order of increasing weight of their atoms and to say that similar electrons occurred at regular atomic weight intervals.

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periodic table timeline

ByMARIA FERNANDA GARCIA ROBLEDO
29 ноя 2018
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18 фев 1862 г.
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~ 163 г назад
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