CBSE Class 11-science Answered
q
Asked by Sunil Soni | 19 Oct, 2016, 12:22: PM
Expert Answer
The correct option is of number 2 that means from the given structures, 4 molecules are aromatic.
To be aromatic, the molecule should follow Huckel rule that is 4n+2 = number of pi electrons in the molecule.
n should be positive integer that means 0,1,2,3,...so on for being aromatic.
Hence,
From the first row, third molecule satisfy this rule as follows:
4n+2=10
4n=8
n=2
From the second row, second, third and fourth molecule satisfy this rule as follows:
Second molecule
4n+2=6
n= 1
Third molecule,
4n+2=10
n=2
Fourth molecule,
4n+2=14
n=3
Answered by Prachi Sawant | 20 Oct, 2016, 10:37: AM
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