Q. Which of the following is a Lewis acid?
A) $AlCl_{3}$
B) $Cl^{-}$
C) $CO$
D) $C_{2}H_{2}$
Explanation
(a)
According to Lewis acid is any species (molecule, radial or ion) that can accept an electron pair to form a coordinate covalent bond. Thus, acid is an electron deficient species e.g., $BF_{3},AlCl_{3},\ {SO}_{3}$ and all cations etc.
[image:7_image20.emf]
Or ${AlCl}_{4}^{-}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.