Which is strongest Lewis acid? (A) \( \mathrm{BF}_{3} \) (B) \( \mathrm{BCl}_{3} \) (C) \( \math...

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Which is strongest Lewis acid?
(A) \( \mathrm{BF}_{3} \)
(B) \( \mathrm{BCl}_{3} \)
(C) \( \mathrm{BBr}_{3} \)
(D) \( \mathrm{BI}_{3} \)
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