Question

what is Lewis acid?

Answer 1

Lewis acid:

Lewis acid is any acid which is an electron pair acceptor.

Answer 2

Some points related to Lewis acid are as follows:-

1. Molecules of acid in which the central atom has incomplete octet.

2. Acids having simple cations because they are deficient in electrons.

3. Acids having molecules in which central atom has empty d-orbital.

4. Acids in which molecules of atom of different Electronegativities are linked by multiple bonds.

All Lewis acids are negatively Charged species, so are considered as electrophile.