The formate ion has two equivalent resonance structures
CHEMISTRY · Single correct · A Level · Chemistry · Bonding · Bonding
Problem
The formate ion HCO2− has two equivalent resonance structures, each containing one C=O bond and one C–O bond. What is the predicted average C–O bond order in the ion?
(a) 2.0
(b) 1.0
(c) 1.5
(d) 1.33