CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2009

  • question_answer
    The correct order of ionisation energy of C, N, O, F is

    A)  \[F<O<N<C\]  

    B)  \[F<N<C<O\]

    C)  \[C<N<O<F\]  

    D)  \[C<O<N<F\]

    Correct Answer: D

    Solution :

    Ionisation energy generally increases from left to right in a period but ionisation energy of nitrogen is greater than oxygen due to stable \[{{p}^{3}}\] configuration. Hence, the order is as                 \[C<0<N<F\]


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