Question

Match the sub-atomic particles to the scientists who discovered them:

• A. J. Chadwick
• B. J.J. Thomson
• C. E. Goldstein

Answer 1

J.J. Thomson conducted the cathode ray experiment and proved the presence of negatively charged particles called electrons.

In 1886, E. Goldstein used anode rays to prove the existence of positively charged particles and named them protons.

In 1932, James Chadwick experimentally proved the presence of neutral atomic particles and named them neutrons.