question_answer

(a) How bond energy varies from \[N_{2}^{-}\] to \[N_{2}^{+}\] and why? (b) On the basis of molecular orbital theory what is similarity between (i) \[{{F}_{2}},\,O_{2}^{--}\]        (ii) \[CO,\,{{N}_{2}},\,N{{O}^{+}}\]?

Answer:

                (a) Bond energy of \[N_{2}^{+}=\] Bond energy of \[N_{2}^{-}\]. This is because they have the same bond order. (Strictly speaking, \[N_{2}^{-}\] is slightly less stable and hence has less bond energy than \[N_{2}^{+}\] due to presence of greater number of electrons in the anti bonding molecular orbitals) (b) (i) Same bond order and bond length, (ii) Same bond order and bond length.