Physics - Modern Physics Question with Solution | TestHub

A sample of${\mathrm{I}}_{51}^{131}$as iodine ion was administered to a patient in a carrier consisting of$\text{0.10} \mathrm{mg}$of stable iodine ion. After$4$days$67.7\mathrm{\%}$of initial radioactivity was detected in the thyroid gland of the patient. The percentage of stable iodine ion that had migrated to the thyroid gland, if${\mathrm{t}}_{\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$2$}\right.}$for iodide ion is$8$days is