Nucleon Emission Decay

It is possible for an unstable isotope to emit a nucleon from the nucleus.

In proton-rich or proton-heavy nuclei it is possible (though rare) for a proton to be emitted.

Loss: 1 proton

In neutron-rich or neutron-heavy nuclei it is possible (though rare) for a neutron to be emitted.

Loss: 1 neutron