Both technetium99 and thallium201 are used to image heart muscle in patients with suspected heart problems. Both
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Both technetium–99 and thallium–201 are used to image heart muscle in patients with suspected heart problems. Both radioisotopes decay by first order processes and have half-lives of 6 h and 73 h, respectively. What percent of the radioactivity would remain for each of the isotopes after 2 days (48 h)?
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