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Description of benzen

Which of the following is an INCORRECT description of benzene?
a. The CCC bond angles are all equal to 120 o
b. The 6-membered ring contains alternating double and single carbon-carbon bonds
c. The molecule may be drawn as resonance hybrid of 2 Kekule structures
d. The molecule is planar

Which of the following criteria is NOT used to determine if a molecule is aromatic?
a. Structure is cyclic
b.Each carbon atom in the ring has sp3 hybridization
c.Structure is planar or nearly so
d.The pi network contains 4N +2 electrons

Which of the following numbers of pi electrons would not lead to aromaticity?
a. 2
b. 6
c. 8
d. 10

The compound cyclobutadiene would be best catagorized as
a. anti-aromatic
b. non-aromatic
c. aromatic
d. none of the above

Which of the following is also an acceptable name for 3-nitrophenol?
a. o-nitrophenol
b. m-nitrophenol
c. p-nitrophenol
d. none of the above

Solution Preview

Which of the following is an INCORRECT description of benzene?
B is the answer. In reality this type of structure (alternating double and single carbon-carbon bonds) does not exist. The correct structure must be drawn as a ring inside the hexagon to represent benzene.
References:
http://www.chemguide.co.uk/basicorg/bonding/benzene1.html
http://chemistry2.csudh.edu/rpendarvis/BenzStr.html

Which of the following criteria is NOT used ...

Solution Summary

The solution provides step-by-step explanations to each of the question, including references where required.

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