Question:
In the anion HCOO^-, the two carbon-oxygen bonds are found to be of equal length. What is the reason for it?
In the anion HCOO^-, the two carbon-oxygen bonds are found to be of equal length. What is the reason for it?
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Resonance equalises bond lengths.
Updated On: Mar 18, 2026
- C=O bond is weaker than C–O bond
- the anion has two resonating structures
- the anion is obtained by removal of proton
- carbon orbitals are hybridised
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The Correct Option is B
Solution and Explanation
Step 1: Resonance concept. Formate ion has two equivalent resonance structures.
Step 2: Effect on bond length. Both C–O bonds attain equal bond order.
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