9th Class Science Structure of the Atom Question Bank 9th CBSE Science Structure of the Atom

  • question_answer
        (a) Chlorine occurs in nature in two isotopic forms with masses 35 u and 37 u. The percentage of  is 75%. Find the average atomic mass of chlorine atom. (b) Give any three applications of isotopes.

    Answer:

       (a) % of Average atomic mass                                 (b) Applications of isotopes (i)An isotope of iodine (1-131) is used in the treatment of goitre,                     (ii) P-32 is used in agricultural research.         (iii) Na-24 is used to detect blood clots.       


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