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JEE PHYSICS MCQ: NUCLEI

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Application +4 | -1
Calculate the disintegration energy Q for the fission of  4298M{ ~}_{42}^{98} \mathrm{M} o into two equal fragments, 2149 Sc{ }_{21}^{49} \mathrm{~S} c. If QQ turns out to be positive, explain why this process does not occur spontaneously. Given that :

m(4298Mo)=97.90541 amum\left({ }_{42}^{98} \mathrm{Mo}\right) =97.90541 \mathrm{~amu}

m(2149Sc)=48.95002 amum\left({ }_{21}^{49} \mathrm{Sc}\right) =48.95002 \mathrm{~amu}

mn=1.00867 amum_n =1.00867 \mathrm{~amu}.
View answer and explanation
Correct option: B
944.6 MeV944.6 \mathrm{~MeV}
Option B (944.6 MeV944.6 \text{{ MeV}}) is correct because it is the disintegration energy Q calculated using the mass defect and the conversion factor from amu to MeV.

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