A) \[N{{F}_{3}}\]
B) \[PC{{l}_{3}}\]
C) \[SnC{{l}_{4}}\]
D) \[PbC{{l}_{2}}\]
Correct Answer: D
Solution :
Lewis concept: According to this concept An acid is a substance which can accept a pair of electrons whereas a base is a substance which can furnish a pair of electrons to form a coordinate bond. In \[PbC{{l}_{2}}\], lead is most electron deficient due to inert pair effect. Therefore, \[PbC{{l}_{2}}\]is strongest Lewis acid.
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