• # question_answer 73) Which of the following describes correct sequence for decreasing Lewis acid nature? A) $BC{{l}_{3}}>B{{E}_{3}}>BB{{r}_{3}}$B) $BB{{r}_{3}}>BC{{l}_{3}}>B{{F}_{3}}$C) $BB{{r}_{3}}>B{{F}_{3}}>BC{{l}_{3}}$D) $B{{F}_{3}}>BC{{l}_{3}}>BB{{r}_{3}}$

Correct Answer: B

Solution :

Due to back bonding $B{{F}_{3}}$shows maximum tendency due to small size of F.

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