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aug 30, 1869 - Mendeelev's Periodic Table

Description:

Mendeleev published his first periodic table - arrangement of elements according to atomic mass. He put those with similar properties were in the same vertical column of the table.

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Development of Periodic Table

ByKarl Stücker
26 Nov 2018
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Date:

aug 30, 1869
Now
~ 156 years ago
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