What are not products of a nuclear fission reaction?

Products of a nuclear fission reaction typically include smaller atomic nuclei (fission fragments), neutrons, and a release of energy. However, products that are not generated in a fission reaction include unchanged parent nuclei, as they undergo transformation, and stable isotopes that do not result from fission. Additionally, elements heavier than uranium, such as some transuranic elements, are not direct products of fission but may be formed from neutron capture processes.