question_answer

Which of the following compounds is aromatic?

A)                  

B)       

C)                                   

D)       

Correct Answer: D

Solution :

is aromatic because the compound is cyclic and number of, \[\pi \]electrons is 2, which is in accordance with the Huckels rule, \[(4n+2)\pi .\]When\[n=0,\] according to this rule, number of \[\pi \]electrons is \[4\times 0+2=2\]