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Which of the following isotope is used in the treatment of blood cancer?
1. P-32
2.  I-131
3. Co-60
4. any of these

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Correct Answer - Option 1 : P-32

Concept:

Isotopes:

  • Isotopes are nuclides that have the same atomic number but different mass numbers.
  • Since they have the same number of protons, they are atoms of the same element.
  • Have identical chemical properties.
  • Due to differences in mass numbers, they have different physical properties and rates of reactions.

Eg: Protium (1H1), deuterium (2H1), and tritium (3H1) are isotopes of Hydrogen; 35Cl17 and 37Cl17 are isotopes of Chlorine.

Explanation:

Application of Isotopes in Medical diagnosis:

Various isotopes find application in medical treatment. Some examples are given below:

Isotope Use
74As
  • For locating brain tumours

32P

 

  • For detecting skin cancer
  • For the treatment of blood cancer.

58Co

  • For determining the uptake of vitamin B12

51Cr

 

  • For determining the volume of red blood cells and total volume of blood.

59Fe

 

  • For measuring the rate of formation and lifetime of red blood cells.
60Co
  • To destroy cancerous cells in deep-seated growths in the body.
131I
  • Destroy the cancerous thyroid cells.
90Sr
  • For the treatment of corneal cancer.
Hence, the isotope used in the treatment of blood cancer is P-32.

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