Question

The decreasing order of aromaticity fo the following is
I. Benzene, II. Napthalene, III. Anthrance
A. `(I) gt (II) gt (III)`
B. (IIII) gt (II) gt (I)`
C. `(II) gt (I) gt (III)`
D. `(II) gt (IIII) gt (I)`

Answer 1

Correct Answer - `a`
`R.E`. Of benzene napathalene and anthrancene, respectively are `151,255`, and `351 kJ mol^(-1)`
`E.E.//` ring of napthalene (two rings) `= 255//2`
`= 127.5 kJ mol^(-1)`
`R.E.//"ring"` of anthrance (three rings) `= 351//3`
`= 117 kJ mol^(-1)`
On the basic of `R.E.//"ring", R.E`. of `"benzene" gt "of napathalene" gt "of anthrance".