Q. The species which acts as a Lewis but not a Bronsted acid is
A) $NH_{2}^{-}$
B) $O^{2 -}$
C) $BF_{3}$
D) $OH^{-}$
Explanation
(c)
$BF_{3}$ can accept a pair of electrons, but it cannot give $H^{+}$ ions in the aqueous solution, hence $BF_{3}$ acts as Lewis acid but not as a Bronsted acid
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.