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

  • question_answer
      The average atomic mass of a sample of an element X is 16.2 u. What is the percentage of isotopes and in the sample? 

    Answer:

                      Atomic mass of element X = 16.2 u Let the percentage of the isotope  be x Percentage of the isotope  (100 -x) Atomic mass of Percentage of isotope Percentage of isotope


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