Question

Neutron was discovered by

• A. J.J. Thomson
• B. Rutherford
• C. Priestly
• D. Chadwick

Answer 1

Answer:

D. Chadwick

The neutron was discovered by James Chadwick in 1932.

James Chadwick:

James Chadwick was a British physicist who made the discovery while working at the Cavendish Laboratory at Cambridge University.

Experiment:

Chadwick's discovery was based on an experiment where he bombarded beryllium with alpha particles, resulting in the emission of neutral radiation. He demonstrated that this radiation consisted of particles with a mass similar to that of protons but with no charge.

Conclusion:

Chadwick's discovery of the neutron revolutionized the field of nuclear physics and led to a deeper understanding of the atomic nucleus.