In which one of the following molecules strongest back donation of an electron pair from halide to boron is expected?
Solution
Type of back bonding<br><br>$$\matrix{
{B{F_3}} & {BCl} & {BB{r_3}} & {B{I_3}} \cr
{(2p\pi - 2p\pi )} & {(2p\pi - 3p\pi )} & {(2p\pi - 4p\pi )} & {(2p\pi - 5p\pi )} \cr
} $$<br><br>Therefore back bonding strength is as follows<br><br>BF<sub>3</sub> > BCl > BBr<sub>3</sub> > BI<sub>3</sub>
About this question
Subject: Chemistry · Chapter: p-Block Elements · Topic: Group 13: Boron Family
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