# Do each and every resonant structures contribute to a resonance hybrid?

There can be many resonating forms for a compound. It is to be noted that they are not in any equilibrium to each other. Each and every structures will contribute to the ultimate hybrid, according to their stability. The most important point is that resonating hybrid is not a mixture of the resonating structures, but rather an intermediate of them.

This is what my book writes. But if it is intermediate, it must contain at least some properties of each and every structure. Now, one structure has no charge, while other structure has one $+ve$ charge & one $-ve$ charge . In the final structure, it still contains both the charges. So, how can it be an intermediate as it got no contribution from the first?? Confused. Please help.

• What molecule are you referring to? – Marko Dec 1 '14 at 20:12
• Brief answer about charge - if the molecule has no net formal charge, then it will always have no net formal charge. Every resonance structure must always have no net formal charge. However, individual atoms may have partial formal charges, and the net partial charge on an atom will be the weighted average over the formal and partial charges on that atom in each resonance contributor. – Ben Norris Dec 1 '14 at 20:14
• @Marko: I asked the quo thinking about phenol. Phenol has 5 resonating str. 3 of them contain $+$ & $-$ charges;the other being neutral. In the hybrid also, charges remain present. So, if the hybrid is intermediate, what does it take from the two neutral strs.? – user5764 Dec 2 '14 at 1:53