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Which of the following elements is used in radiotherapy of cancer?

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a

Cobalt

b

Carbon

c

Iodine

d

Phosphorous

answer is A.

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Detailed Solution

Cobalt is used in the radiotherapy of cancer.
The chemical element cobalt has the atomic number 27 and the chemical symbol Co. Apart from minor amounts found in alloys of naturally occurring meteoric iron, cobalt is solely found in the Earth's crust in chemically mixed form, like nickel. Cobalt is used in the radiotherapy of cancer. It is a radioactive element and the extra energy is released as gamma rays from the nucleus. In the treatment of cancer Cobalt-60 as it releases gamma radiation.

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