A \( \mathrm{PO}_{4}{ }^{3-} \)
B \( \mathrm{S}_{2} \mathrm{O}_{3}{ }^{2-} \)
C \( \mathrm{ClO}_{2}^{-} \)
D \( \mathrm{NO}_{2}{ }^{+} \)
E \( \mathrm{ClO}_{4}^{-} \)
Correct Answer: Option C
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