Question

Calculate the mass defect for the formation of phosphorus-31. The mass of a phosphorus-31 mucleus is 30.973765 amu. The masses of a proton and a neutron are 1.00728 and 1.00866 amu, respectively

Answer 1

Can't you add up the mass of the neutrons, add to the mass of the protons, and subtract from 30.973765?