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jan 1, 1913 - Niels Bohr Niels Bohr discovered the number of outer shells with electrons that decide the chemical property. It was later named after him as the “Bohr Model”.
Added to timeline:
Atomic Model Timeline
By
Andrew Christmann
19 Oct 2018
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0
490
Date:
jan 1, 1913
Now
~ 113 years ago
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