Among the following the aromatic compound is

Step-by-step solution

(a) 4 n+2=2, n=0 (integer) (b) 4 n+2=4, n=0.5 (c) ; n+2=4, n=0.5 (d) ; 4 n+2=4, n=0.5 Only (a) obeys Huckel's rule.