is acid according to — Ionic Equilibrium Chemistry Question

💡 Solution & Explanation

According to Lewis concept of acids and bases, an acid is a substance which can accept a lone pair of electrons whereas a base is a substance which can donate a lone pair of electrons. BF3 is sp2 hybridized with trigonal planar structure. The central atom boron present in it has incomplete octet due to shortage of electrons. Therefore, it can accept electrons from any Lewis’s base and can act as Lewis’s acid.