Chemistry - GOC Question with Solution | TestHub
ChemistryGOCAromaticityHard2 minQB
ChemistryHardsingle choice
Compare the dipole moments of azulene and naphthalene. Is the dipole moment of (a) greater than, less than or equal to that of (b) ?
(a) 
(b) 
Options:
Answer:
D
Solution:
Azulene polarises into a tropylium cation (7-ring) and a cyclopentadienide anion (5-ring), both aromatic (6π), so it has a large dipole moment (about 1.1 D). Naphthalene is a symmetrical non-polar hydrocarbon (0 D). So a b.
Stream:JEESubject:ChemistryTopic:GOCSubtopic:Aromaticity
⏱ 2mℹ️ Source: QB
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