Question

what do you mean by Nuclear fission? explain with example​

Answer 1

Nuclear fission, subdivision of a heavy atomic nucleus, such as that of uranium or plutonium, into two fragments of roughly equal mass. The process is accompanied by the release of a large amount of energy.

Answer 2

Fission is the splitting of an atomic nucleus into two or more lighter nuclei accompanied by energy release.

or

Nuclear fission, subdivision of a heavy atomic nucleus, such as that of uranium or plutonium, into two fragments of roughly equal mass. The process is accompanied by the release of a large amount of energy.

For example, the fission of one kilogram of uranium releases as much energy as burning around four billion kilograms of coal.