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A) \[Co_{3}^{2-},NO_{3}^{-}\]
B) \[Cl_{3}^{-},CO_{3}^{2-}\]
C) \[SO_{3}^{2-},NO_{3}^{-}\]
D) \[ClO_{2}^{-},SO_{3}^{2-}\]
Correct Answer: A
Solution :
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