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Question

The relationship between the dissociation energy of N2 and N+2 is:

A
dissociation energy of N2 = dissociation energy of N+2
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B
dissociation energy of N2 can either be lower or higher than the dissociation energy of N+2
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C
dissociation energy of N2 > dissociation energy of N+2
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D
dissociation energy of N+2 > dissociation energy of N2
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Solution

The correct option is C dissociation energy of N2 > dissociation energy of N+2
Bondorderαbondenergy
So the bond order of N2 and N+2 is as follows
Bond order of N2=3,
Bond order of N+2=2.5,
the bond order of N2 is more than N+2,
Hence, dissociation energy of N2 > dissociation energy of N+2
So the correct option is [C].


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