Fusion reaction is more energetic than fission reaction because

Step-by-step solution

The energy released in a nuclear reaction is determined by the mass defect, which is the difference between the mass of the reactants and the mass of the products. This mass defect is converted into energy according to Einstein's mass-energy equivalence relation, E = m c^2 . In fission, a heavy nucleus splits into two lighter nuclei, whereas in fusion, two light nuclei combine to form a heavier nucleus. The binding energy per nucleon curve shows that the binding energy per nucleon increases significantly when light