J & K CET Engineering J and K - CET Engineering Solved Paper-2015

  • question_answer
    The   correct  order  of  the  ligands,\[O{{H}^{-}},NO_{3}^{-},PP{{h}_{3}},\] pyridine, according to their increasing field strength is

    A) \[NO_{3}^{-}<O{{H}^{-}}<pyridine<PP{{h}_{3}}\]

    B)  \[O{{H}^{-}}<NO_{3}^{-}<PP{{h}_{3}}<\text{pyridine}\]

    C)  \[O{{H}^{-}}<NO_{3}^{-}<\text{pyridine}<PP{{h}_{3}}\]

    D)  \[NO_{3}^{-}<O{{H}^{-}}<PP{{h}_{3}}<Pyridine\]

    Correct Answer: A

    Solution :

     Increasing order of crystal field splitting power is as follows: \[\underset{\text{weak}\,\text{field}\,\text{ligand}}{\mathop{NO_{3}^{-}<O{{H}^{-}}}}\,\underset{\text{strong}\,\text{field}\,\text{ligand}}{\mathop{<pyridine<PP{{h}_{3}}}}\,\]


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