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difference between nuclear fission and nuclear fusion

Nuclear Fission:

1. It involves the splitting of a heavy nucleus into lighter nuclei.
2. It is a chain process.
3. High temperature is not essential.
4. Fission process can be carried out in a controlled manner and energy released can be used for peaceful purposes.
5. There is a production of large number of radioisotopes and large amount of nuclear waste is left.
Nuclear Fusion:

1. It involves the union of two or more lighter nuclei to form a heavy nucleus.

2. It is not a chain process.

3. Being a thermonuclear process, it requires extremely high temperature (> 106 K).

4. Fusion process is extremely difficult to be carried out in a controlled manner.

5. No nuclear waste is left. Hence, it does not cause pollution.


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