The tendency of ( {BF\_3, BCl\_3}) and ( {BBr\_3}) to behave... | Chemistry | SolveeIt

Question

The tendency of ${BF_3, BCl_3}$ and ${BBr_3}$ to behave as Lewis acid decreases in the sequence

$\ce{BF3 > BCl3 > BBr3}$

$\ce{BCl_3 > BF_3 > BBr_3}$

$\ce{BBr_3 > BCl_3 > BF_3}$

$\ce{BBr_3 > BF_3 > BCl_3}$

Answer

$\ce{BBr_3 > BCl_3 > BF_3}$

Explanation

Solution

As the extent of $p\pi - p\pi$ back bonding decreases, electron-deficiency increases and hence the Lewis acid strength increases, i.e., option (c) is correct.

Chemistry Question on p -Block Elements

Solution