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jan 1, 1817 - Johann Dobereiner

Description:

Put forward the law of triads. The appearance and reaction of each element in the triad were similar to each others. He also discovered that the atomic mass of the middle element was close to the average of the triad.

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Science

ByJayath Gunawardena
28 Jul 2018
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Date:

jan 1, 1817
Now
~ 209 years ago

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