Q.

Heavy nuclei must be such that they can be fissioned by neutrons of an energy such substance are called?

A. fission fragments
B. fission neutrons
C. fission species
D. fission elements
Answer» C. fission species
Explanation: heavy nuclei must be such that they can be fissioned by neutrons of energy such substance are called fission species. all fission species should have long half lives so that the rate of decay is not so fast.
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