may 12, 1913 - -Niels Bohr was a theoretical nuclear physicist. Bohr proposed a theory in 1913 that electrons existed in set orbits around the nucleus, and was the key to the periodic repetition of properties of the elements. Bohr improved rutherford's model, making it so that electrons orbited around the nucleus in a fixed manner
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Date:
may 12, 1913
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~ 112 years ago