How is nuclear fusion different from nuclear fission?

1 Fission produces energy but fusion does not.

2 In fission, the product is a larger atomic nucleus.

3 In fusion, the product is a larger atomic nucleus.

4 Fusion produces energy but fission does not.

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.