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Q.
Species having the same bond order are (1) $ N_{2}^{2-} $ (2) $ N_{2}^{+} $ (3) $ {{N}_{2}} $ (4) $ N_{2}^{-} $
BHUBHU 2011
Solution:
BO of $ N_{2}^{2-}=\frac{1}{2}(10-6)=2 $
BO of $ N_{2}^{+}=\frac{1}{2}(9-4)=2.5 $
BO of $ {{N}_{2}}=\frac{1}{2}(10-4)=3 $
BO of $ N_{2}^{-}=\frac{1}{2}(10-5)=2.5 $
Hence, bond order of $ N_{2}^{+} $ and $ N_{2}^{-} $ are same.