Q. Among the following sets, the most stable ionic species are

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A

Option 1 Image

B

Option 2 Image

C

Option 3 Image

D

Option 4 Image

Solution:

The specie which follows Huckel’s rule $(4 n + 2) π$ will be most stable species.

As both the species in option (d) follow Huckel’s rule. Thus, it is correct option.