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Which of the following halides is most acidic ?A. `PCl_(3)`B. `SbCl_(3)`C. `BiCl_(3)`D. `C Cl_(4)`

Answer» Correct Answer - A
In `C Cl_(4)`, carbon atom does not have d-orbitals to accomodate a lone pair of electrons and hence is not a Lewis acid. In `PCl_(3),SbCl_(3) and BiCl_(3)` central atom gas empty d-orbitals in each case but electronegativity of P is maximum, hence `PCl_(3)` is strongest acid.


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