Which of the following is not a Lewis acid [MP PET 2002]

1.	Which of the following is not a Lewis acid [MP PET 2002]
A.	CO
B.	\[SiC{{l}_{4}}\]
C.	\[S{{O}_{3}}\]
D.	\[Z{{n}^{2+}}\]
Answer» B. \[SiC{{l}_{4}}\]

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