Average binding energy per nucleon for some nuclei is approximately: : , : , : , :

PHYSICS · Single correct · CBSE · Physics · Nuclei · Nuclei

Problem

Average binding energy per nucleon for some nuclei is approximately:

^2_1\text{H}

1.1\,\text{MeV}

^3_1\text{H}

2.8\,\text{MeV}

^4_2\text{He}

7.0\,\text{MeV}

^{56}\text{Fe}

8.8\,\text{MeV}

. On this basis, which of the following reactions is most likely to release energy spontaneously? (a)

^2_1\text{H}+ ^2_1\text{H}\;\rightarrow\; ^3_1\text{H}+ ^1_1\text{H}

(b)

^{56}\text{Fe}\;\rightarrow\; 2\times ^{28}_{14}\text{Si}

(c)

^2_1\text{H}+ ^3_1\text{H}\;\rightarrow\; ^4_2\text{He}+ ^1_0\text{n}

(d)

^4_2\text{He}+ ^4_2\text{He}\;\rightarrow\; ^8_4\text{Be}