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Which one of the following element's isotopes is used in the treatment of cancer?

Options

  1. AIodine
  2. BSodium
  3. CCobalt
  4. DUranium

Correct answer

C. Cobalt

Step-by-step solution

Cobalt is a radioactive element that emits gamma rays. A radioactive element has excess energy which is emitted from the nucleus as gamma radiation and the Isotopes of any element has some number of protons but a different number of neutrons in each atom. In the treatment of cancer cobalt therapy or cobalt-60 therapy is the medical use of gamma rays from the radioisotope cobalt-60.

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