Question

According to Lewis concept $B{F}_3$ acts as a Lewis acid, which is:

• A. electron deficient.
• B. electron rich.
• C. nucleophile.
• D. neutral.

Answer 1

The correct option is A electron deficient.

According to Lewis concept $B{F}_3$ is act as Lewis acid, which are electron deficient.
$BF_3$ is a trigonal-planar molecule because electrons can be found in only three places in the valence shell of the boron atom. As a result, the boron atom is $s{p}^2$ hybridized, which leaves an empty $2p_z$ orbital on the boron atom. $B{F}_3$ can therefore act as an electron-pair acceptor, or Lewis acid.