The binding energy can also be viewed as the amount of energy it would take to rip the nucleus apart to form isolated neutrons and protons.
It is therefore literally the energy that binds together the neutrons and protons in the nucleus.
It can capture an electron or it can emit a positron.
Most of the time, the -ray is emitted within 10Nuclides with atomic numbers of 90 or more undergo a form of radioactive decay known as spontaneous fission in which the parent nucleus splits into a pair of smaller nuclei.A graph of the number of neutrons versus the number of protons for all stable naturally occurring nuclei.Nuclei that lie to the right of this band of stability are neutron poor; nuclei to the left of the band are neutron-rich.The synthesis of a mole of helium releases 3.4 million times as much energy.Since most nuclear reactions are carried out on very small samples of material, the mole is not a reasonable basis of measurement.
The solid line represents a neutron to proton ratio of 1:1.