Which of the following radioisotope would be LEAST likely to be used in a medical application? A) barium-131 (half-life = 11.6 days) B) iodine-131 (half-life = 8 days) C) technecium-99m (half-life = 6 hours) D) plutonium-239 (half-life = 2.4 × 10⁴ years) E) fluorine-18 (109 minutes)

Question

Quizplus · Accepted Answer

Plutonium-239 has a very long half-life of 24,100 years, making it less suitable for medical applications due to its long-term radioactivity and potential health hazards. Other isotopes with shorter half-lives are preferred as they decay more quickly, reducing exposure to radiation.

Which of the Following Radioisotope Would Be LEAST Likely to Be