The History of the Atom
Category: Other
Updated: 21 Sep 2017
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Created byKane Anderson
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Events
Dalton explained that elements can be formed into comounds (1880)J. J. Thompson describes the atom using the plum pudding model (1897)Rutherford discovered the nucleus of the atom (1902)Bohr Develops a new model of the Atom with energy "shells" (1920)James Chadwick discovers the neutron (1932)Marie Sklodowska Curie Studied uranium and thorium and called
their spontaneous decay process "radioactivity". She and her husband
Pierre also discovered the radioactive elements polonium and radium.
(1898)J.J. Thomson Used a CRT to experimentally determine the charge
to mass ratio (e/m) of an electron =1.759 x 10 8 coulombs/gram. (1897)
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