The binding energy for the following nuclear reactions are expressed in MeV. If denote the stability of and respectively, then the correct order is: [2026]

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Solution

Q.
The binding energy for the following nuclear reactions are expressed in MeV.

${}_{2}{He}^{3} + {{}_{0}n}^{1} \to {}_{2}{He}^{4} + 20 MeV$

${}_{2}{He}^{4} + {{}_{0}n}^{1} \to {}_{2}{He}^{5} - 0.9 MeV$

If $X_{3}, X_{4}, X_{5}$ denote the stability of ${}_{2}{He}^{3}, {}_{2}{He}^{4}$ and ${}_{2}{He}^{5}$ respectively, then the correct order is: [2026]

1 $X_{4} > X_{5} > X_{3}$

2 $X_{4} < X_{5} < X_{3}$

3 $X_{4} > X_{5} < X_{3}$

4 $X_{4} = X_{5} = X_{3}$

Ans.
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