1.Isotopes iron-59 is used in__________.

A. Treatment of thyroid cancer

B. Bone marrow function 

C. Treatment of leukemia 

D. Spleen imaging

is an isotope that has more neutrons than the normal iodine element. This isotope has been found useful in radiation treatments for thyroid cancer treatment. If iodine typically has protons, which of the following statements is true?

Iodine-131 is administered orally in the form of as a treatment for thyroid cancer. The half-life of iodine-131 is 8.04 days. If you begin with 52.7 mg of this. isotope, what mass remains after 9.09 days have passed?

Two radioactive isotopes of iodine used for the diagnosis andtreatment of thyroid disease have mass numbers of 123 and 131. Foreach isotope, give the following information: (a) the number ofprotons; (b) the number of neutrons; (c) the number of electrons inthe neutral atom; (d) the group number.