Technetium-99m gamma emitter t12 602 hr is widely used for, Ask an Expert

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Technetium-99m (gamma emitter, t1/2 = 6.02 hr) is widely used for diagnosis in medicine. A sample prepared in the early morning for use that day had an activity of 4.72 x 10-6 Ci. What will its activity be at the end of the day-that is, after 10.00 hr?

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