Question

Which of the following molecules acts as a Lewis acid?

• A. $(C{H}_3{)}_{3}N$
• B. $(C{H}_3{)}_{3}B$
• C. $(C{H}_3{)}_{2}O$
• D. $(C{H}_3{)}_{3}P$

Answer 1

The correct option is B $(C{H}_3{)}_{3}B$

Since Lewis acids are $e^{-}$ pair acceptor or $e^{-}$ deficient

So only strong lewis acid will be ${B\left({CH}_3\right)}_3$ as it has only 6 electrons in its valence shell and has one vacant 2p orbital.