The mass of a \({ }_{3}^{7} \mathbf{L i}\) nucleus is 0.042 u less than the sum of the masses of all its nucleons. The binding energy per nucleon of \({ }_{3}^{7} \mathbf{L i}\) nucleus is nearly
A. 46 MeV
B. 5.6 MeV
C. 3.9 MeV
D. 23 MeV
Answer:B
The mass of a \({ }_{3}^{7} \mathbf{L i}\) nucleus is 0.042 u less than the sum of the masses of all its nucleons. The binding energy per nucleon of \({ }_{3}^{7} \mathbf{L i}\) nucleus is nearly
A. 46 MeV B. 5.6 MeV C. 3.9 MeV D. 23 MeV