Which of the following is not linear [DCE 2001]

1.	Which of the following is not linear [DCE 2001]
A.	\[C{{O}_{2}}\]
B.	\[Cl{{O}_{2}}\]
C.	\[I_{3}^{-}\]
D.	None of these
Answer» C. \[I_{3}^{-}\]

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