Multiple choice

Assertion: [10]-Annulene is an aromatic because it contains Huckel number of π-electrons. Reason: Steric interaction between internal hydrogen makes it non-planar.

  1. Both A and R are true and R is the correct explanation of A.

  2. Both A and R are true but R is NOT the correct explanation of A.

  3. A is true but R is false.

  4. A is false but R is true.

  5. Both A and R are false.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This option is correct,  because [10]-Annulene contains Huckel number of π-electrons (i.e., n=2) and thus it should be aromatic if planar. But due to severe non-bonded interactions between the internal hydrogens, the ring assumes non-planar geometry.

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