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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

Respuesta :

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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26-12-2015

The answer is (1) electron, by J. J. Thomson.

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