I have some read answers on this forum, some books like Halliday Resnick and my course books. I have understood that binding energy is the energy we need to supply to break nucleus into individual nucleons (or the opposite). What I can not understand is why a high binding energy or more released energy helps in stability. Does it somehow offset coulombic repulsion? or should I just take it as a generalisation as in chemistry that an exothermic reaction is more stable?
One more thing, we have been told in class about some theory where neutron and proton convert into each other to gain stability but only in short.