Ryan's Chemistry Blog
Ryan Tait's Chemistry Web Log.
Saturday, October 2, 2010
The discovery of the neutron
James Chadwick discovered neutrons by firing alpha particles at beryllium, which fired the unknown particles, which knocked atoms into a gas chamber. The gas became ionized and the charge was used to determine that the unknown uncharged particles had relatively the same mass as protons. He dubbed these particles neutrons.
The discovery of the proton
Rutherford used the Gold Foil experiment to conclude that there was a small, dense cluster of positively charged particles he called protons in the center of the atom, which he called the nucleus.
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