radionuclide
ATOM THAT HAS EXCESS NUCLEAR ENERGY, MAKING IT UNSTABLE
Radioisotope; Radioactive isotopes; Radioisotopes; Radionuclides; Unstable isotope; Radioactive isotope; Radioactive material; Radio-isotope; Radionucleide; Commercially available radioisotopes; Radio isotopes; Radio isotope; Radioactive materials; Radioactive element; Radioisotope production; Radioactive nucleus; Radio-nuclide; Radioactive nuclide; Unstable nucleus; Neutron deficient; Proton deficient; Radioactive nuclei; Unstable nuclei
(n.) = radionúclido
Ex: These can be radioisotopes of nuclear fallout origin as well as radionuclides from primordial sources.