What is the end result of a nuclear fusion reaction? two new atoms with smaller nuclei form molecule of atoms forms one new atom with a larger nucleus forms new bonds between atoms are formed

The end result of a nuclear fusion reaction is one new atom with a larger nucleus. Nuclear fusion is a reaction in which two or more atomic nuclei come close enough to form one or more different atomic nuclei and sub atomic particles. Fusion of light elements toward these releases energy, while fusion producing nuclei heavier than these elements will result in energy retained by the resulting nucleons, and the resulting reaction is endothermic.