Question

In the anion, $HCO{O}^{-}$ the two carbon-oxygen bonds are found to be of equal length. What is the reason for it?

• A. The C=O bond is weaker than the C-O bond
• B. The anion $HCO{O}^{-}$ has two resonating structures
• C. The anion is obtained by removal of a proton from the acid molecules
• D. None of these.

Answer 1

Answer: (B)

The anion $HCO{O}^{-}$ has two resonating structures

The anion $HCO{O}^{-}$ has two resonating structures in which double bond occurs on both xygen atoms. So, the bond length of both the $CO$ bonds is equal.

Hence, Option "B" is the correct answer.