beta decay
There are either decompose, beta particles that have a negative charge to the positive charge that is. A beta particle decay, that is, that there is a negative charge. The nucleus of the Atom are caused when the proportion of particles protons, neutrons per atom, making it extraordinarily high instability. When too many neutrons. Neutron particles of protons and electrons will be changed to one in which particles, electrons are released. Called beta rays.