Q37 / 180 · AIIMS 2001 · Chemistry

Which of the following is aromatic?

  • A
    Figure
  • Correct answer
    B
    Figure
  • C
    Figure
  • D
    Figure

Solution

Aromaticity can be predicted by the use of Huckle's rule which says that $(4 n+2) \pi$-electrons are required in delocalisation system to give it aromaticity. $(4 n+2) \pi$ electrons means $2,6,10 \ldots \ldots \pi$ electrons. Figure
for delocalisation $=6$ $\therefore$ It is expected to be aromatic.

Hence, the correct answer is option: 'B'.

Relevant Questions