Question

out of BF3 ,AlCl3 ,BeCl2 and SnCl4 which compound is not a Lewis acid

Answer 1

becl2 compound is not a lewis acid

Answer 2

Answer: $SnCl_{4}$ is not a lewis acid.

Explanation:

A substance or compound which can accept electrons is known as a lewis acid whereas a compound which can donate electrons is known as a lewis base.

For example, $BF_{3}$, $AlCl_{3}$, and $BeCl_{2}$ are all lewis acid as their central atom has incompletely filled octet so, it will gain electrons.

Thus, out of the given options $SnCl_{4}$ is not a lewis acid as it tin has completely filled octet.