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Neutrons were discovered by

June 1, 2025 by rawan239

Neutrons were discovered by

James Chadwick

Ernest Rutherford

J. J. Thomson

John Dalton

This question was previously asked in

UPSC NDA-2 – 2020

Download PDF Attempt Online

The correct answer is (A) James Chadwick. James Chadwick discovered the neutron in 1932.

The discovery of the neutron completed the basic understanding of the composition of the atomic nucleus, alongside protons.

J. J. Thomson discovered the electron in 1897. Ernest Rutherford, through the gold foil experiment, discovered the atomic nucleus and later identified protons within the nucleus (in 1917-1919). John Dalton is credited with developing the modern atomic theory in the early 19th century.

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