College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 67

A pair of nuclei for which Z 1 = N 2 and Z 2 = N 1 are called mirror isobars. (The atomic and neutron numbers are interchangeable.) Binding-energy measurements on such pairs can be used to obtain evidence of the charge independence of nuclear forces. Charge independence means that the proton proton, proton neutron, and neutron neutron forces are approximately equal. Calculate the difference in binding energy for the two mirror nuclei O and N.