Answer: Option 3) In fusion, the product is a larger atomic nucleus.
Explanation:
Nuclear fusion involves the combination of two or more light nuclei to form a heavier and larger atomic nucleus with a release of energy and radiation.
Nuclear fission, on the other hand, involves the splitting a heavy element into two nuclei of nearly equal mass with release of energy and radiation.
Thus, in nuclear fusion, the product is a larger atomic nucleus as opposed to the smaller nuclei obtained in nuclear fission.
