State a radioactive isotope with a half-life

Reference no: EM13242485

A patient is given 0.055mg 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 3.1 x 10^-3 mg? (Assume no excretion of the nuclide from the body)

Reference no: EM13242485

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