This is my fourth time posting this problem, so if you are not 100% sure that you know how to solve it please please please leave it alone. Calculate...

This is my fourth time posting this problem, so if you are not 100% sure that you know how to solve it please please please leave it alone.

Calculate the binding energy per nucleon for the following isotope 78Se: _________ MeV/nucleon ( FYI: the answer is not 3.953)