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jan 1, 1932 - James Chadwick's Atomic Theory

Description:

In 1932, James discovered the neutron. While experimenting with beryllium atoms with alpha particles, an unknown radiation was produced. Chadwick concluded this radiation as being composed of particles with a neutral electrical charge and the approximate mass of a proton. The neutrons were very hard to find because it did not repel the protons when it was in the atom.

Added to timeline:

21 Sep 2017
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Atomic Theory Timeline - Adrianne Moran 4th Period Chemistry

Date:

jan 1, 1932
Now
~ 86 years ago

Images:

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