As the extent of electron delocalization into the ring increases, the geometry at nitrogen flattens. P-Nitroaniline, for

Question:

As the extent of electron delocalization into the ring increases, the geometry at nitrogen flattens. P-Nitroaniline, for example, is planar. Write a resonance form for p-nitroaniline that shows how the nitro group increases electron delocalization. Examine the electrostatic potential of the p-nitroaniline model on Learning By Modeling. Where is the greatest concentration of negative charge?