Consider the resonance structures for the carbonate ion. carbonate is a carbon double bonded to an oxygen with two lone pairs and single bonded to two oxygens, each with three lone pairs and a negative charge. the three resonance structures are all equivalent. how much negative charge is on each oxygen of the carbonate ion? 0 −1.33 −0.33 −0.67 −0.50 −2.00 −1.00 −1.67 −1.50 what is the bond order of each carbon‑oxygen bond in the carbonate ion?