Question

A chemical which damages WBC, bone marrow, spleen, lymph nodes and lungs is

• A. $Iodin{e}^{131}$
• B. $Calcium$
• C. $Strontiu{m}^{90}$
• D. $Iodin{e}^{127}$

Answer 1

The correct option is C $Strontiu{m}^{90}$

Radioactive $I^{131}$ gets concentrated in the thyroid gland like ordinary iodine ($I^{127}$). Radioactive $S{r}^{90}$ is mistaken for calcium and enters bones to cause bone cancer. It also causes damage to WBCs, bone marrow, spleen, lymph nodes, etc. It impairs eyesight and produces sterility, skin cancer and lung tumors.
Thus, the correct answer is option (C), '$Strontiu{m}^{90}$'.