Question

Acidity of $B{F}_3$ can be explained on which of the following concepts?

• A. Arrhenius concept
• B. Bronsted Lowry concept
• C. Lewis concept
• D. Bronsted Lowry as well as Lewis concept

Answer 1

Answer: (C)

According to Lewis concept, acid can accept pair of electrons and base can donate a pair of electron. Thus, as $B{F}_3$ has six electrons in its valence shell, so accept an electrons pair and acts as Lewis acid.