The nucleus is a metastable nucleus of technetium-99; it is used in medical diagnostic work. Technetium 99m
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is a metastable nucleus of technetium-99; it is used in medical diagnostic work. Technetium 99m decays by emitting gamma rays. A 2.5-μg (microgram) sample has an activity of 13 Ci. What is the decay constant (in units of /s)?
Transcribed Image Text:
99m1 43 1C Tc
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Because an activity of 10 Ci is 37 x 10 10 nuclei...View the full answer
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