In the following questions a statement of assertion (A) followed by a statement of reason (R) is given. Choose the correct option out of the choices given below each question.

Assertion (A) : The compound cyclooctane has the following structural formula :

It is cyclic and has conjugated 8\pi-electron system but it is not an aromatic compound.
Reason (R) : (4n + 2) \pi electrons rule does not hold good and ring is not planar.

(i) Both A and R are correct and R is the correct explanation of A.
(ii) Both A and R are correct but R is not the correct explanation of A.
(iii) Both A and R are not correct.
(iv) A is not correct but R is correct.

Answers (1)

The answer is the option (i) Both A and R are correct, and R is the correct explanation of A.

Explanation:

There are some characteristics possessed by compounds which show aromaticity:

  1. Complete delocalisation of \pi electrons in the ring
  2. Planarity of the compound
  3. Huckel Rule, viz., presence of (4n + 2) \pi electrons where n is an integer.

 

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