Respuesta :
basically all it is a nucleus splitting into smaller fragments and these fragments are almost equal to half of the original mass
Explanation:
Fission refers to splitting into parts.
When there is splitting of a heavy nucleus that leads to formation of two or more small nucleus along with release of energy is known as a nuclear fission reaction.
For example, [tex]^{235}_{92}U + ^{1}_{0}n \rightarrow ^{89}_{36}Kr + ^{144}_{56}Ba + 3^{1}_{0}n + 210 MeV[/tex]