Hydrocarbons Question 416
Question: Cyclic hydrocarbon molecule A has all the carbon and hydrogens in a single plane. All the carbon-carbon bonds are of same length and less that 1.54 Å but more than 1.34 Å. $ C-C-C $ bond angle will be [CBSE PMT 1989]
Options:
A) $ 120^{o} $
B) $ 180^{o} $
C) $ 100^{o} $
D) $ 109^{o}2{8}’ $
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Answer:
Correct Answer: A
Solution:
Cyclic hydrocarbon in which all the carbon atoms are present in the same plane is benzene.
In this $ C-C $ bond length is 1.39Å which is more than 1.34Ao but less than 1.54Å.
Hence bond angle is $ 120^{o} $ with $ sp^{2} $ hybridization.
BETA
