A sample of `{:(131),( 53):}` I, as iodine ion, was administered to a patient in a carrier consisting of `0.10` mg of stable iodide ion. After `4.00` days, `67.7%` of the initial radioactivity was detected in the thyroid gland of the patient. What mass of the stable iodide ion had migrated to the thyroid gland ? (`t_(1 //2 = 8` days.)

Answer

`0.0958` mg