Concept:Neutrons are neutral subatomic particles found in the nucleus.Explanation:The neutron was discovered experimentally by James Chadwick in 1932.He bombarded beryllium with alpha particles and observed highly penetrating radiation.This radiation consisted of neutral particles with mass nearly equal to that of a proton.These particles were named neutrons.Thus, Chadwick is credited with the discovery of the neutron.Answer:C. James Chadwick