Neither does the 6-carbon pi-bond of the benzene ring.
Neither does the 6-carbon pi-bond of the benzene ring. Only a first-principles molecular-orbital calculator would know for sure. It almost makes sense, really, that O3 should be single-bonded.
Why O2 is not more double-bonded is what bothers me. Lewis octet rules do not handle that concept "naturally". Argonne National Laboratory, Division of Educational Programs, Harold Myron, Ph. We know from experience that the charge is not jettisoned.