Which of the following species will have the minimum bond energy?

N_{2}

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N_{2}^{-}

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N_{2}^{+}

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N_{2}^{2 -}

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Solution

The correct option is D $N_{2}^{2 -}$
$N_{2}^{2 -}$ will have the minimum bond energy as it has lowest bond order.
$N_{2}$ has bond order of $3$ .
$N_{2}^{-}$ has bond order of $2.5$ .
$N_{2}^{+}$ has bond order of $2.5$ .
$N_{2}^{2 -}$ has bond order of $2$ .
Note: Lower is the bond order, lower will be the strength of the bond and lower will be the bond energy.

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