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dec 5, 1869 - Dimitri Mendeleev

Description:

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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Nedo Matic Atomic timeline

ByNedo MATIC
8 Dec 2017
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Date:

dec 5, 1869
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~ 156 years ago

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