7.40 Classify the following species into Lewis acids and Lewis bases and show how these act as Lewis acid/base:
(a)
(b)
(c) .
(d)
Species which donate pair of an electron are called Lewis base and which accepts pair of electrons are called acid.
(a) is a Lewis base since it can donate its lone pair of electrons.
(b) is a Lewis base since it can donate a pair of electrons.
(c) is a Lewis acid since it can accept a pair of electrons.
(d) is a Lewis acid since it can accept a pair of electrons.