Which of the following is non-polar [DCE 2002]

1.	Which of the following is non-polar [DCE 2002]
A.	\[PC{{l}_{5}}\]
B.	\[PC{{l}_{3}}\]
C.	\[S{{F}_{6}}\]
D.	\[I{{F}_{7}}\]
Answer» D. \[I{{F}_{7}}\]

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