JSM Learn - Q-18. Four structures are given in options (i) to (iv), Examine them and select the aromatic structure. <img alt="" src="http://jsmlearn.com/editor_images/HC-qun-18 options low_1646784671.jpg" style="width: 448px; height: 162px;" />

Q-18. Four structures are given in options (i) to (iv), Examine them and select the aromatic structure.

Ans: (i) and (iii)

Explanation:

The planar cyclic molecule which follow 4n+2 π electron( where n = 0,1,2,3,4,…….) rule ( huckel’s rule) is said to be aromatic.

In(i) and (iii) molecules, they are planar cyclic molecule and which follow 4n+2 π electron rule, so they are aromatic.