1.

The cyanide ion, CN^(-) and N_(2) are isoelectronic. But in contrast to CN^(-),N_(2) is chemically inert, because of

Answer»

low bond energy
absence of bond polarity
unsymmetrical electron distribution
presence of more number of electrons in bonding ORBITALS.

Solution :Both `CN^(-)` and `N_(2)` MOLECULES have the same MO DIAGRAMS but differ in bond polarity. Thus, `N_(2)` is inert DUE to absence of bond polarity while `CN^(-)` ion is reactive due to presence of bond polarity.


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