Which of the following complexes or molecules has/ have N-N bond lengt – InterviewSolution

1.	Which of the following complexes or molecules has/ have N-N bond length greater than that in free N_(2) molecule?
Answer» `[Ru(NH_(3)_(5)(N_(2))]^(+)` `[Ni(Pme_(3))_(3)(N_(2))]` `[CoH(PPh_(3))_(3)(N_(2))]` `N_(2)O` SOLUTION :In (a),(b),(c ) N-B.L.`UARR` due to SYNERGIC bonding while in `N_(2)O`,B.L.`uarr` due to resonance.

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