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20 май 1869 г. - Dmitri Mendeleev

Описание:

Arranged elements into 7 groups with similar properties. He discovered that the properties of elements "were periodic functions of the their atomic weights". This became known as the Periodic Law.

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scientific atom timeline

ByKyrell Brown
11 дек 2018
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20 май 1869 г.
Сейчас
~ 156 г назад
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