b6reameshajessl b6reameshajessl
  • 24-12-2015
  • Chemistry
contestada

In the late 1800s, experiments using cathode ray tubes led to the discovery of the
(1) electron (3) positron
(2) neutron (4) proton

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pegah
pegah pegah
  • 24-12-2015
J.J. Thomson discovered the negatively charge of electron so the answer is (1) electron :)))
i hope this be helpful
* merry Christmas *
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PhyCS
PhyCS PhyCS
  • 26-12-2015
The answer is (1) electron, by J. J. Thomson.
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