1.

Distinguish between nuclear fission and nuclear fusion.

Answer»

Nuclear fission:

  • It is the process in which a heavy nucleus splits up into two lighter nuclei of nearly equal masses. 
  • About 200 MeV of energy is available per fission in case of \(^{235}_{92}U\). 
  • The products of nuclear fission are, in general, radioactive.

Nuclear fusion:

  • It is the process in which two lighter nuclei combine together to form a heavy nucleus. 
  • Energy available per fusion is much less but the energy per unit mass of material is much greater than that for fission of heavy nuclei. 
  • The products of fusion are, in general, non-radioactive.


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