A) \[B{{F}_{3}}\]
B) \[AlC{{l}_{3}}\]
C) \[S{{O}_{2}}\]
D) \[{{H}_{2}}O\]
Correct Answer: D
Solution :
According to Lewis, bases are substances which have unshared pair of electron and can donate the electron pair to the formation of co-ordinate covalent bond. Hence,\[{{H}_{2}}\overset{\bullet \,\,\bullet }{\mathop{O{}_{\bullet }^{\bullet }}}\,\]is a Lewis base while\[B{{F}_{3}},AlC{{l}_{3}},\]and\[S{{O}_{2}}\]are Lewis acid.
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