The tendency of BF3, BCl3 and BBr3 to behave as Lewis acid decreases in the sequence

Question

The tendency of BF3, BCl3 and BBr3 to behave as Lewis acid decreases in the sequence (A)  BF3 > BCl3 > BBr3  (B)  BCl3 > BF3 > BBr3 (C) BBr3 > BCl3 > BF3  (D) BBr3 > BF3 > BCl3

Tardigrade Admin · Accepted Answer

p π back bonding decreases in the order BBr3 > BCl3 > BF3

Q. The tendency of $B F_{3}, BC l_{3}$ and $BB r_{3}$ to behave as Lewis acid decreases in the sequence

$B F_{3} > BC l_{3} > BB r_{3}$

$BC l_{3} > B F_{3} > BB r_{3}$

$BB r_{3} > BC l_{3} > B F_{3}$

$BB r_{3} > B F_{3} > BC l_{3}$

$p π$ back bonding decreases in the order $BB r_{3} > BC l_{3} > B F_{3}$

Q. The tendency of BF3​,BCl3​ and BBr3​ to behave as Lewis acid decreases in the sequence

BF3​>BCl3​>BBr3​

BCl3​>BF3​>BBr3​

BBr3​>BCl3​>BF3​

BBr3​>BF3​>BCl3​