According to the shell model, binding energy per nucleon is greater when N or Z is equal to one of the numbers below except for
A) 2.
B) 8.
C) 13.
D) 20.
E) 28.

Question

Quizplus · Accepted Answer

The binding energy per nucleon is greater when the number of nucleons, N or Z, is equal to a number related to a fully occupied shell in the nuclear shell model. These numbers are 2, 8, 20, 28, 50, 82, and 126. Therefore, the correct answer is C, as 13 is not one of the magic numbers.

According to the Shell Model, Binding Energy Per Nucleon Is