Ncert Exercises & Solutions

7.40 Classify the following species into Lewis acids and Lewis bases and show how these act as Lewis acid/base: (a) OH– (b) F– (c) H+ (d) BCl3 .

(a) ${OH}^{-}$ is a Lewis base since it can donate its lone pair of electrons.

(b) $F^{-}$ is a Lewis base since it can donate a pair of electrons.