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Who found electron, proton, and neutron?

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Detailed Solution

Electron was discovered by J. J. Thomson, proton by Ernest Rutherford, and neutron by James Chadwick.

Particle	Scientist	Year	Discovery method
Electron (−)	J. J. Thomson	1897	Cathode-ray tube experiment proved existence of negatively charged particles.
Proton (+)	Ernest Rutherford	1917	Alpha-particle experiments on nitrogen showed positively charged nucleus particle.
Neutron (0)	James Chadwick	1932	Beryllium radiation produced neutral particles with mass equal to proton.

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Who found electron, proton, and neutron?