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jan 1, 1932 - James Chadwick

Description:

-1891-1974, England
-The nucleus of an atom contains neutrons, electrically neutral particles with a mass similar to that of a proton, in 1932
-Bombarded beryllium with alpha particles and discovered Rutherford's missing neutral particles

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History of the Atom

ByMonica Orlandi
29 Nov 2017
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Date:

jan 1, 1932
Now
~ 93 years ago

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