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Objective Type Questions
The correct order of \( \mathrm{C}-\mathrm{O} \) bond order among \( \mathrm{CO} \), \( \mathrm{CO}_{3}{ }^{2-}, \mathrm{CO}_{2} \) is
(1) \( \mathrm{CO}\mathrm{CO}_{3}{ }^{2-}\mathrm{CO}_{2} \)
(2) \( \mathrm{CO}_{3}{ }^{2-}\mathrm{CO}_{2}\mathrm{CO} \)
(3) \( \mathrm{CO}\mathrm{CO}_{2}\mathrm{CO}_{3}{ }^{2-} \)
(4) \( \mathrm{CO}_{2}\mathrm{CO}_{3}^{2-}\mathrm{CO} \)
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