(a)
Interpretation:
The electronic configuration of benzene anion has to be predicted and its pi bond energy has to be calculated.
Concept Introduction:
Huckel method is used to determine the energy of molecular orbitals that contains pi electrons. This method is applied for conjugated pi electron system.
The pi orbitals of benzene in the increasing order of energy is as follows,
Where
The energy of bonding pi orbital is
Benzene contain six pi electrons. And the electronic configuration of benzene can be written as follow,
So the pi bonding energy of benzene can be calculated as follows,
(b)
Interpretation:
The electronic configuration of benzene cation has to be predicted and its pi bond energy has to be calculated.
Concept Introduction:
Huckel method is used to determine the energy of molecular orbitals that contains pi electrons. This method is applied for conjugated pi electron system.
The pi orbitals of benzene in the increasing order of energy is as follows,
Where
The energy of bonding pi orbital is
Benzene contain six pi electrons and the electronic configuration of benzene can be written as follow,
So the pi bonding energy of benzene can be calculated as follows,

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Chapter 9 Solutions
Us Solutions Manual To Accompany Elements Of Physical Chemistry 7e
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