Among the following compounds which non aromatic: a) b) c) d)

Option D is non aromatic...No complete conjugation. If electron doesn't delocalise then compound is non aromatic.If electron delocalise then on basis of huckel rule you can identif...

Option D is non aromatic while rest of all aromatic. here due to presence of sp3 carbon in compound D, there is no conjunction in whole ring so it doesn't follow condition of Aroma...

D is the non-aromatic compound. Rest all are aromatic. D has no complete resonance, it's neither aromatic nor anti-aromatic. One carbon is sp3 hybridised in D which restricts reson...