All the given species CO₂, NO₃⁻, O₃ and CO₃²⁻ will exhibit resonance.
What is resonance?
Resonance is a property which is shown by those molecules in which lone pair of electrons or negative charge will present next to the double bond within a molecule.
Among the given CO₂, NO₃⁻, O₃ and CO₃²⁻ all will show resonance structures as in these species, lone pair of electrons or negative charge is present next to the double bond. Resonance structures of all given compounds will be represent in the below attached image.
Hence, all compounds will exhibit resonance.
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