J & K CET Engineering J and K - CET Engineering Solved Paper-2005

  • question_answer
    Which of the following is planar?

    A) \[Xe{{F}_{2}}\]

    B) \[Xe{{O}_{3}}F\]

    C)  \[Xe{{O}_{2}}{{F}_{2}}\]

    D) \[Xe{{F}_{4}}\]

    Correct Answer: A

    Solution :

      \[\text{Xe}{{\text{F}}_{\text{2}}}\]molecule contains two bond pairs and three lone pairs in the outer-shell of central atom and thus its hybridisation is\[s{{p}^{3}}{{d}^{2}}\] but to minimize the repulsive forces the   three lone pairs occupy the equatorial position   and   the   molecule becomes linear shape.


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