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  5. Structure of the Atom

9th Class Science Structure of the Atom Question Bank Atomic Structure Summative Subjective Problems

  • question_answer
    An atom has mass number A and atomic number Z: (a) How many protons are present in the nucleus? (b) How many electrons revolve around the nucleus? (c) How many neutrons are present in the nucleus?

    Answer:

    An atom has mass number A and atomic number Z: (a) No. of protons = Z (b) No. of electrons= No. of protons = Z (c) No. of neutrons\[=AZ\]


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