If the average binding energy per nucleon overcomes the repulsion, the nucleus stays together and it referred to as what?
closed
even
solid
stable
Each nucleus, therefore, has competing forces. The repulsive force between the protons tends to blow the nucleus apart and the binding energy tends to hold the nucleus together. If the average binding energy per nucleon overcomes the repulsion, the nucleus stays together and it referred to as stable. If the repulsion overcomes the average binding energy per nucleon, the nucleus may blow apart or undergo nuclear disintegration . When a nucleus disintegrates, it throws off pieces of itself and energy in the form of gamma rays . This disintegration process came to be called radioactivity .