Electron was discovered by ____________.
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A.
Neils Bohr
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B.
Goldstein
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C.
J. Chadwick
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D.
J.J. Thomson
Correct Answer:
D. J.J. Thomson
Explanation:
J.J. Thomson is credited with the discovery of the electron in 1897 through his research on cathode rays. By utilizing a vacuum tube and applying electric and magnetic fields, he demonstrated that these rays were composed of negatively charged particles significantly smaller than atoms. This groundbreaking finding earned him the Nobel Prize in Physics in 1906 and fundamentally altered the understanding of atomic structure by proving that atoms are divisible.
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