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

  • question_answer
      If  has 12 protons and 12 neutrons, what is its atomic number and mass number?

    Answer:

      Ans. Atomic number = Number of protons =12 Mass number = Number of protons + Number of neutrons = 12 + 12 = 24


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