Which one of the following statements is not true for a compound to be considered as aromatic? A. The compound must be cyclic and planar B. The compound must be monocyclic. C. The compound must have a conjugated system with p orbital at every vertex D. The compound must satisfy Hückel's rule -must have (4n + 2)t electrons. E. none of these

Aromatic compounds are benzene-like compounds. They usually have a characteristic odor and that’s why they are termed aromatic. For a compound to be aromatic, there are some criteria that must be satisfied by the compound in question.

Let’s examine the options to see if they fit.

Option A is correct, aromatic compounds must be cyclic and planar

Option C is correct. There must be conjugation of the pi electron system

Option D is correct, they must possess 4n + 2 pi electrons. This is referred to as the Huckel’s rule

Option B is wrong. This is simply because we have compounds which are not monocyclic and are aromatic. Example of this is anthracene and naphthalene

ayfat23 ayfat23 · Answer 2 · 2021-11-30T14:40:01+01:00

Statement that is not true as regards aromatic compound is B:The compound must be monocyclic.

Aromatic compound can be regarded as high class of unsaturated chemical compounds that usually have one or more planar rings of atoms.

It could be cyclic and planar, then is should be able to satisfy the Hückel's rule , The compounds that belongs to this group usually have conjugated system.

Therefore, option B is correct.

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