Question

Does the number of resonance structures affect the polarity of a molecule? How?

Answer 1

​​​​​​

Yes, the resonance structures affect the polarity of a molecule. → Resonance can effect the polarity and dipole moment of a molemle eigin by delocalizing the electrons into Carbon-Carbon double bonds the dipole moment is decreased in resonant Systems. See the example below. Dipole moment has some value CH₂=CH- - and i equal to charges times the distance of separation of charges. After resonance & the molecule has a as structure C - CH₂ → Oo- below : 20 After restnance & CH-CH=c - CH₂ си, а н - с - си, Now the separation of charges is more, so increase in dipole moment. Note: The individual resonance structures vary in dipole moment (and as a result in polosity but the resonance hybeid is the average of all the resonance structures.