Which of the following statements is correct?

Options

A. `BCl_(3)` and `AlCl_(3)` are both Lewis acids and `BCl_(3)` is stronger than `AlCl_(3)`
B. `BCl_(3)` and `AlCl_(3)` both are Lewis acids and `ACl_(3)` is stronger than `BlCl_(3)`
C. `BCl_(3)` is a Lewis acid and `AlCl_(3)` are not Lewis acids
D. Both `BCl_(3)` and `AlCl_(3)` are not Lewis acids

Answer

A

Explanation

`BCl_(3)` and `AlCl_(3)` both are electron-deficient compound and can accept lone pair to act as Lewis acid. Also `BCl_(3)` involves smaller boron atom and, thus, attracts electron pair more easily.