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jan 1, 1922 - Niels Bohr

Description:

The first to discover that electons have seperae orbits around the nucleus and the number of electons in the outer orbit determines the properties of the element.

Added to timeline:

Science

ByJayath Gunawardena
28 Jul 2018
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443

Date:

jan 1, 1922
Now
~ 104 years ago

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