Which of the following has no dipole moment [DCE 2002]

1.	Which of the following has no dipole moment [DCE 2002]
A.	\[C{{O}_{2}}\]
B.	\[S{{O}_{3}}\]
C.	\[{{O}_{3}}\]
D.	\[{{H}_{2}}O\]
Answer» B. \[S{{O}_{3}}\]

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