RAJASTHAN PMT Rajasthan - PMT Solved Paper-2007

  • question_answer
    Which of the following is not Lewis acid?

    A) \[AlC{{l}_{3}}\cdot 6{{H}_{2}}O\]                             

    B)        \[AlC{{l}_{3}}\]

    C)        \[SnC{{l}_{4}}\]                

    D)        \[FeC{{l}_{3}}\]

    Correct Answer: A

    Solution :

    \[AlC{{l}_{3}}\] is \[sp\] hybridised. When it combines with six \[{{H}_{2}}O\] molecules, one of the vacant \[p-\] orbitals and five \[d-\]orbitals are filled by electrons pairs, as a result of which it cannot accept more electrons and so, will not act as electron acceptor of Lewis acid.


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