Which of these is least likely to act as a Lewis base?

Question

Which of these is least likely to act as a Lewis base? (A) PF3 (B) CO (C) F- (D) BF3

Tardigrade Admin · Accepted Answer

Electron rich species are called Lewis base.
Among the given,

B F_{3}

is an electron deficient species, so have a capacity of electron accepting instead of donating. That's why it is least likely to act as a Lewis base. It is a Lewis acid.

Q. Which of these is least likely to act as a Lewis base?

$P F_{3}$

$CO$

$F^{-}$

$B F_{3}$

Electron rich species are called Lewis base.
Among the given, $B F_{3}$ is an electron deficient species, so have a capacity of electron accepting instead of donating. That's why it is least likely to act as a Lewis base. It is a Lewis acid.

Q. Which of these is least likely to act as a Lewis base?

PF3​

CO

F−

BF3​

Electron rich species are called Lewis base. Among the given, BF3​ is an electron deficient species, so have a capacity of electron accepting instead of donating. That's why it is least likely to act as a Lewis base. It is a Lewis acid.

$P F_{3}$

$CO$

$F^{-}$

$B F_{3}$

Electron rich species are called Lewis base.
Among the given, $B F_{3}$ is an electron deficient species, so have a capacity of electron accepting instead of donating. That's why it is least likely to act as a Lewis base. It is a Lewis acid.