How many Kekule structures are possible for benzene, naphthalene, and anthracene ?

Name: How many Kekule structures are possible for benzene, naphthalene, and anthracene ?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

For benzene, only one Kekule structure is possible.
For naphthalene, three Kekule structures are possible.
For anthracene, four Kekule structures are possible. 
Thus, the total number of possible Kekule structures is 2+3+4=9, which is only possible with choice B.

How Many Kekule Structures Are Possible for Benzene, Naphthalene, and Anthracene