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      Question

      Atomic number of an element is equal to the number of

      ____ in the nucleus.
      A Electrons and protons Correct Answer Incorrect Answer
      B Neutrons Correct Answer Incorrect Answer
      C Electron Correct Answer Incorrect Answer
      D Protons Correct Answer Incorrect Answer

      Solution

      The atomic number of an element is equal to the number of protons in the nucleus.

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