Among the following sets, the most stable ionic species are

Step-by-step solution

(a) and It has 8 π e - s , doesn't follow Huckel's rule It has 4 π e - s , doesn't follow Huckel's rule (b) and It has 8 π e - s , doesn't follow Huckel's rule It has 2 π e - s follows Huckel's rule Q (c) and It has 10 π e - s , follows Huckel's rule It has 4 π e - s , doesn't follow Huckel's rule (d) and It has 10 π e - s , follows Huckel's rule It has 2 π e - s , follows Huckel's rule As both the species in option (d) follow Huckel's rule. Thus, it is correct option.