Question
Asked Oct 10, 2019

Which of the following radioisotopes are most likely to be used in nuclear medicine? (write the number i.e. 1 or 2 )

1)  40K   half-life 1.3 x 109 years

2)  42K   half-life 12 hour

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Expert Answer

Step 1

Radioisotopes used in nuclear medicine have short half-lives. Radioisotopes with short half-lives are used in nuclear medicine because they have the same chemistry in the body as the nonradioactive atoms.

Step 2

Radioisotopes with short half-lives are used in nuclear me...

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