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jan 1, 1932 - Chadwick

Description:

Discovered that the nucleus is made up of protons AND neutrons.
Chadwicks model consists of a centered nucleus made up of clustered protons and neutrons and three electron energy rings that orbit around the nucleus.

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Atomic Theory Timeline

ByEvan Allen (student)
26 Sep 2018
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Date:

jan 1, 1932
Now
~ 93 years ago
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