1- The total binding energy of 56Fe in MeV is 26 [Note that: the atomic mass of Fe = 55.939395 u, the atomic mass of proton = 1.007276 u and the atomic mass of neutron = 1.008664 u.]

1- The total binding energy of 2656Fe in MeV is [Note that: the atomic mass of Fe=55.939395u, the atomic mass of proton = 1.007276u and the atomic mass of neutron =1.008664u.]