Neutrons were discovered by ______?

A. James Chadwick
B. Ernest Rutherford
C. J.J Thompson
D. John Dalton

Correct Answer:

Option A – James Chadwick

Explanation

– Sir James Chadwick, was a British physicist who was awarded the 1935 Nobel Prize in Physics for his discovery of the neutron in 1932.

– Ernest Rutherford postulated the nuclear structure of the atom, discovered alpha and beta rays, and proposed the laws of radioactive decay.

– Sir Joseph John Thomson was a British physicist and Nobel Laureate in Physics, credited with the discovery of the electron, the first subatomic particle to be discovered.

– John Dalton was an English chemist, physicist and meteorologist. He is best known for introducing the atomic theory into chemistry