nuclear fission is defined as nuclear reaction whereby the nucleus of an atom splits into many smaller parts. the small fragments are almost equal to half of the original mass. two or more neutrons are emitted too.
there are two major forces that work that is the attraction between protons and neutrons and electrostatic repulsion between the protons. Therefore for the small nuclei, most of the nucleons interact with one another strongly and the strong force dominates.
May 8th, 2015
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