Answer: (c) BF3
Lewis acids are electron-pair acceptors. BF3 is a Lewis acid
In 1923 G. N. Lewis suggested another way of looking at the reaction between H+ and OH– ions. In the Lewis theory of acid-base reactions, bases donate pairs of electrons, and acids accept electrons’ pairs. Therefore, a Lewis acid is any substance, such as the H+ ion, that can accept a pair of nonbonding electrons.
- A Lewis acid is an electron-pair acceptor.
- A Lewis base is any substance, such as the OH– ion, that can donate a pair of nonbonding electrons.
- The Lewis theory suggests that acids react with bases to share a pair of electrons, with no change in any atoms’ oxidation numbers.