A patient is given 0.050 mg of technetium-99m, a
Chapter 19, Problem 46E(choose chapter or problem)
A patient is given 0.050 mg of technetium-99m, a radioactive isotope with a half-life of about 6.0 hours. How long does it take for the radioactive isotope to decay to 1.0 x 10-3 mg ? (Assume no excretion of the nuclide from the body.)
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