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Resonance and formal charge

AP.Chem: SAP‑4 (EU), SAP‑4.B (LO), SAP‑4.B.1 (EK), SAP‑4.B.2 (EK)
You might need: Periodic table

Problem

Which of the following statements is best explained by resonance?
Choose 1 answer:
Stuck?
Stuck?