A) Energy released per unit mass of the reactant is less in case of fusion reaction
B) Packing fraction may be positive or may be negative
C) \[P{{u}^{239}}\]is not suitable for a fission reaction
D) For stable nucleus, the specific binding energy is low
Correct Answer: B
Solution :
Mass defect per nucleon is called packing fraction. Packing fraction \[(f)=\frac{\Delta m}{A}=\frac{m-A}{A},\] where m = mass of nucleus, A = mass number. Packing fraction measures the stability of a nucleus. Smaller the value of packing fraction, larger is the stability of nucleus. Packing fraction may be positive, negative or zero.
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