radionuclide
atom that has excess nuclear energy, making it unstable
isotope of uranium
nuclides with atomic number Z = 92 and with different mass numbers
Bone seeker
chemical element that accumulates in human and animal bones
synthetic radioisotope
radioisotope that is man-made and is not found in nature
nuclide generator
device for the production of radionuclides
extinct radionuclide
radionuclide formed by nucleosynthesis before formation of the Solar System