Question

define the process of nuclear fission

Answer 1

Hey,

Nuclear fission is a process in nuclear physics in which the nucleus of an atom splits into two or more smaller nuclei as fission products, and usually some by-product particles. Hence, fission is a form of elemental transmutation.

Cheers.

Answer 2

it is the process in which heavy nucleus splits into two or more smaller nuclei,with the evolution of large amount of energy when it is bombarded with slow moving neutron is called nuclear fission
OR
A reaction in which two or more lighter nuclei fuse to form heavy and large amount of energy is released ......