If the half-life of technetium 99m is 6 hours. After seven half-lives what fraction of the original amount of technetium would remain?
belongs to book: Examination Questions and Answers in Basic Anatomy and Physiology|Martin Caon|| Chapter number:17.2| Question number:16
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Medicine
D: The half-life of a particular radionuclide is the time it takes for half of the remaining atoms of that particular radionuclide to decay. (½)7 = 1/128. This means that after 7 half-lives, more than 99.2 % of the radionuclide has decayed.
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