Answer:
They are all radioactive
Explanation:
Radiopharmaceuticals, or medicinal radiocompounds, are a group of pharmaceuticals that contain radioactive isotopes. Radiopharmaceuticals are used as diagnostic and therapeutic agents.
A radioactive tracer, is a chemical compound in which one or more atoms have been replaced by a radionuclide so that as a result of of its radioactive decay the nuclide can be used to explore the mechanism of chemical reactions by carefully tracing the path that the radioisotope follows from reactants to products.
Radionuclides are species of atoms that emit radiation by undergoing radioactive decay leading to the emission of alpha particles (α), beta particles (β), or gamma rays (γ).
From the foregoing, radiopharmaceuticals, tracers, and radionuclides are all radioactive materials. Hence the answer.
