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CHM 102 Practice Questions Objective Question
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Question

Which statement about the structure of benzene is not true?
Options
A The two Kekule structures of benzene are in equilibrium.
Correct Answer
B The carbon-carbon bond lengths in benzene are greater than the carbon-carbon double bonds in aliphatic compounds.
C The molecular geometry of benzene is best described as planar.
D The stability of benzene ring is much greater than the stability of 1,3,5-cycloheptatriene.
Correct Answer

Option A is the correct answer.

Detailed Explanation

Neither of the two Kekule structures for benzene has been isolated. No equilibrium exists between these two structures because they are resonance structures, differing only in the positions of electrons. The other statements are true.

Hint

Are Kekule structures in equilibrium or resonance?

Question Info

Course: CHM 102
Topic: Practice Questions
Type: Objective
Difficulty: Not specified
Question 1645 of 1999
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