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Question

Who named the negatively charged particles present in cathode rays as electrons ?


A
J.J. Thomson
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B
Stoney
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C
Goldstein
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D
None of these
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Solution

The correct option is B Stoney
J J Thomson measured the mass of cathode rays, showing they were made of particles, but were around 1800 times lighter than the lightest atom, hydrogen. Therefore, they were not atoms, but a new particle, the first subatomic particle to be discovered, which he originally called corpuscle but was later named electron, after particles postulated by George Johnstone Stoney in 1874.

Physics

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