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

  • question_answer
    There are two atomic species X and Y, such that
    Atomic species X Y
    Protons 8 8
    Neutrons 8 10
    Which of the following statements is true about X and Y?

    A) X and Y are isobars.

    B) X and Y have different chemical properties.

    C) X and Y have different physical properties.

    D) All are correct.

    Correct Answer: C

    Solution :

    X and Y have same number of protons but different number of neutrons i.e., same atomic number but different mass numbers hence, these are isotopes. Isotopes have same chemical properties but different physical properties.


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