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

  • question_answer
    Which of the following electronic configurations represents a noble gas?

    A) \[2,\,\,8,\,\,2\]                

    B) \[2,\,\,8,\,\,6\]

    C) \[2,\,\,8\]                         

    D)        \[2,\,\,8,\,\,8,\,\,2\]

    Correct Answer: C

    Solution :

     Noble gases have octet configuration (\[8\] electrons in the valence shell) except He (Helium) which has a duplet configuration in its outer most orbit.


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