Answer to Question #333753 in Chemistry for Shay

Question #333753

The half-lives of different radioisotopes are given in the table.

Radioisotope

argon-44

lead-196

potassium-44

indium-117

Half-life (min)

12

22

43

How long would it take, in minutes, for the amount of indium-117 to decrease from 28.0 mg to 3.50 mg?

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