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  5. Structure of the Atom

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

  • question_answer
      Calculate the number of neutrons present in the nucleus of an element X which is represented as .

    Answer:

      Mass number of X = 31 Atomic number of X = 15 Number of neutrons =Mass number ?Atomic number = 31 ? 15 = 16


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