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Atomic History
Created by
Danny DeVito
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Updated
3 months ago
Events
Democritus theorizes that atoms exist.
John Dalton discovered the properties of atoms.
Dmitri Mendeleev organizes the elements into the periodic table.
Ernest Rutherford discovers the proton and the nucleus in an atom.
J. J. Thomson discovers the electron.
Niels Bohr's atomic model.
Frederick Soddy discovers isotopes.
James Chadwick calculates the mass of a nucleus.
