19. If a nucleus contains Zprotons and Nneutrons, its binding energy is ∆EZmNmmcHnbe=+−bg2, where mHis the mass of a hydrogen atom, mnis the mass of a neutron, and mis the mass of the atom containing the nucleus of interest. If the masses are given in atomic mass units, then mass excesses are defined by ()()221,HHnnmcmc∆=−−and ()2.mAc−This means c mcc22=+=+∆∆,,and 2mc=2.Ac∆+Thus, ( )2,NZNA
This is the end of the preview. Sign up
access the rest of the document.