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Questions  

The curve of binding energy per nucleon as a function of atomic mass number has a sharp peak for helium nucleus. This implies that helium

a
Can easily be broken up
b
Is very stable
c
Can be used as fissionable material
d
Is radioactive

detailed solution

Correct option is B

The elements high on the B.E. versus mass number plot are very tightly bound and hence, are stable. And the elements those are lower on this plot, are less tightly bound and hence, are unstable.

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