Resonance Structure Each sp2 hybridized C in the ring has an unhybridized p orbital perpendicular to the ring which overlaps around the ring. 1.397A 20 H120° Copyright2005 Pearson Prentice Hall,Inc. Chapter 16 Chapter 16 4 Resonance Structure Each sp2 hybridized C in the ring has an unhybridized p orbital perpendicular to the ring which overlaps around the ring. =>