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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.

Added to timeline:

8 Dec 2017
1
0
107
Nedo Matic Atomic timeline

Date:

dec 5, 1869
Now
~ 149 years ago

Images:

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