who discovered neutron

The neutron was discovered by the English physicist James Chadwick in 1932. He demonstrated through experiments that there existed a neutral particle in the atom with a mass approximately equal to that of a proton, which he named the neutron. This discovery was a significant breakthrough in nuclear physics as it clarified the composition of the atomic nucleus, which contains both protons and neutrons. Chadwick was awarded the Nobel Prize in Physics in 1935 for this discovery.