Question

Anhydrous $AlC{l}_3$ is considered as Lewis acid because ____________________.

• A. It accepts a pair of electrons.
• B. It donates a pair of electrons.
• C. It releases electrons.
• D. It gains electrons.

Answer 1

The correct option is A It accepts a pair of electrons.

Lewis acid is the electron pair acceptor.

In $AlC{l}_3$ the central atom Al has vacnat d orbitals so it can accepts pair of electrons , so it is a Lewis acid.

Option A is correct.