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

  • question_answer
      The atom of an element has 9 protons, 10 neutrons and 9 electrons. Mention its atomic number and mass number.

    Answer:

      Atomic number = Number of protons = 9 Mass number = Number of protons + Number of neutrons = 9 + 10 = 19


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