Name:James Chadwick
He was born on October 20th 1891 in bollington,United kingdom
He sadly passed away on July 24th 1974 in cambridge united kingdom
James Chadwick is contributed to the atomic theory for discovering the atom in 1935
James chadwick did an experiment where he bombarded berylium with alpha particles from the natural radioactive decay of polonium
James chadwicks diagram consisted of 2 positive protons,2 negative electrons,2 neutrons,and 1 nucleus
*video explaining the discovery of neutrons