Nuclear fission reactions are defined as the nuclear reactions in which heavier nuclei splits into two or more lighter nuclei. In these reactions, neutrons are released with a large amount of energy
Nuclear chain reactions are series of nuclear fission reactions which is initiated by a neutron that is produced in the previous fission reaction.
General equation for nuclear fission reactions is given by:
A-T and C-G are complements so when there is an A in the nucleotide its complementary nucleotide will be a T, vice versa. This is the same with C-G as well.