question_answer

In the anion \[HCO{{O}^{-}}\] the two carbon-oxygen bonds are found to be of equal length. What is the reason for it?     AIEEE  Solved  Paper-2003

A) Electronic orbits of carbon atom are hybridized

B) The \[c=0\] bond is weaker than the C?O bond

C) The anion \[HCO{{O}^{-}}\] has two resonating structures

D) The anion is obtained by the removal of a proton from the acid molecule

Correct Answer: C

Solution :

                                                    Resonating (canonical) structures of formate ion