Chemical Bonding And Molecular Structure Ques 22
22. The relationship between the dissociation energy of $N_2$ and $N_2{ }^{+}$is :
(a) Dissociation energy of $N_2^{+}>$dissociation energy of $N_2$
(b) Dissociation energy of $N_2=$ dissociation energy of $N_2{ }^{+}$
(c) Dissociation energy of $N_2>$ dissociation energy of $N_2{ }^{+}$
(d) Dissociation energy of $N_2$ can either be lower or higher than the dissociation energy of $N_2{ }^{+}$
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Answer:
Correct Answer: 22.(c)
Solution:
(c) Dissociation energy of any molecules depends upon bond order. Bond order in $N_2$ molecule is 3 while bond order in $N_2^{+}$is 2.5 .
Further we know that more the Bond order, more is the stability and more is the BDE.
BETA
