Question

Which of the following is used to detect the presence of blocks in blood vessels

• A. ${}_{15}{P}^{31}$
• B. ${}_{15}{P}^{32}$
• C. ${}_{26}F{e}^{59}$
• D. ${}_{11}N{a}^{24}$

Answer 1

The correct option is D ${}_{11}N{a}^{24}$

${}^{24}N{a}_{11}$ is a radioactive form of sodium that produces beta and gamma radiation. It has applications in medicine as the flow of sodium can be followed in person's body. By injecting sodium-24 into the body, it can be used as a tracer; the radiation, and hence the flow of sodium, can be followed using radiation detectors which in turn helps to identify the presence of blocks in blood vessels.