What is nuclear energy? Name the process used for producing electricity using the nuclear energy.

Nuclear energy arises from radioactive processes like decay, fission, or fusion. During these changes, the combined mass of product nuclei becomes less than that of the reactant nuclei, resulting in a mass loss. This mass loss leads to liberation of energy which is known as nuclear energy.

Nuclear fission with controlled chain reaction in a nuclear reactor is used for producing electricity using the nuclear energy.