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

  • question_answer
    An atom of an element contains \[17\] protons, \[18\] neutrons and \[17\] electrons. Which of the following will be the atomic structure of another isotope of this element?

    A)
    Protons Neutrons Electrons
    17 20 17
     

    B)
    Protons Neutrons Electrons
    17 18 16

    C)
    Protons Neutrons Electrons
    18 18 17

    D)
    Protons Neutrons Electrons
    20 18 17

    Correct Answer: A

    Solution :

     The isotopes of the same element have the same number of protons and electrons, but different number of neutrons. So, element with \[17\] protons and electrons and \[20\] neutrons is an isotope of this element.


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