A) \[AlC{{l}_{3}}\]
B) \[SnC{{l}_{4}}\]
C) \[B{{F}_{3}}\]
D) \[BeC{{l}_{2}}\]
Correct Answer: B
Solution :
According to Lewis, an acid is a substance that can accept an electron pair to form a covalent bond. As per this definition, \[B{{F}_{3}},\] \[AlC{{l}_{3}}\] and \[BeC{{l}_{2}}\] are Lewis acids while. \[SnC{{l}_{4}}\] is not a Lewis acid.
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