Q:

Which one of the following statements about the radionuclide selected for inclusion in radiopharmaceuticals is NOT correct?

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Which one of the following statements about the radionuclide selected for inclusion in radiopharmaceuticals is NOT correct?


  1. it should have a short half life
  2. it should emit alpha or beta rays
  3. it should emit gamma rays in the range 100–250 keV
  4. all the atoms should be radioactive

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B: Particulate radiation (alpha and beta rays) is not penetrating enough to pass out of the body so cannot be used in radiopharmaceuticals.

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