Compare the resonance energies of furan (a) and thiophene (b). Is the resonance energy of (a) greater than, less than or equal to that of (b) ?
(a)
(b)

Question

Compare the resonance energies of furan (a) and thiophene (b). Is the resonance energy of (a) greater than, less than or equal to that of (b) ? (a) (b)

TestHub · Accepted Answer

The sulfur lone pair is more polarisable and S is less electronegative than O, so thiophene has the greater aromatic stabilisation. So a < b.

Chemistry - GOC Question with Solution | TestHub

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