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AP EAMCET · Chemistry · Chemical Bonding and Molecular Structure

The correct order of \(\mathrm{C}-\mathrm{O}\) bond length in \(\mathrm{CO}, \mathrm{CO}_3^{2-}\), \(\mathrm{CO}_2\) is

  1. A \(\mathrm{CO} < \mathrm{CO}_3^{2-} < \mathrm{CO} 2\)
  2. B \(\mathrm{CO}_3^{2-} < \mathrm{CO}_2 < \mathrm{CO}\)
  3. C \(\mathrm{CO} < \mathrm{CO}_2 < \mathrm{CO}_3^{2-}\)
  4. D \(\mathrm{CO}_2 < \mathrm{CO}_3^{2-} < \mathrm{CO}\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(\mathrm{CO} < \mathrm{CO}_3^{2-} < \mathrm{CO} 2\)

Step-by-step Solution

Detailed explanation

\(\mathrm{O}=\mathrm{C}=\mathrm{O} ;{ }^{\ominus} \mathrm{C} \equiv \mathrm{O}^{\oplus}\) The bond length is smallest for the \(\mathrm{C} \equiv \mathrm{O}\) bond due to strong triple bond. Among \(\mathrm{CO}_3^{2-}\) and \(\mathrm{CO}_2, \mathrm{CO}_3^{2-}\) has the smaller…