Which scientist won the 1935 Nobel Prize in Chemistry for discovering the neutron?

James Chadwick won the 1935 Nobel Prize in Physics for the discovery of the neutron.

Chadwick announced the discovery in 1932 after studying radiation produced when beryllium was bombarded with alpha particles. The radiation was best explained by a neutral particle with approximately the mass of a proton. This particle became known as the neutron.

The neutron completed the basic picture of the atomic nucleus alongside positively charged protons. Because it has no electric charge, it can penetrate atomic nuclei more readily than charged particles, making it especially important in nuclear physics.

The question’s field is an important detail: Chadwick won the Nobel Prize in Physics, not Chemistry. Ernest Rutherford had earlier proposed the possibility of a neutral nuclear particle, but Chadwick provided the decisive experimental evidence and received the Nobel recognition.