History of Atomic Model By Mushymarcus Oct 21, 1803 John Dalton John announces his famous atomic theory Feb 6, 1897 Thompson Discovers the neutron Jan 1, 1911 Announcement the model of the atomic atom Ern announces the model of the atomic atom Aug 13, 1913 Niels Bohr Bohr published his model of atomic structure in 1913 Jul 13, 1920 Predicts Neutron Ern predicts the existence of the neutron
