What is the result of fusion reactions?

A kind of nuclear reaction where two light nuclei come in contact with each other to produce a solitary heavier nucleus is known as nuclear fusion. The outcomes of this reaction are usually the unstable compound nuclei, which further gets dissociated into steadier daughter components.  

In this reaction, the fusion leads to the discharge of energy as the mass of the novel nucleus is less in comparison to the total of the original masses. There are various kinds of fusion reactions known as deuterium-deuterium reactions, proton-proton chains, and deuterium-tritium reactions.  

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