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JEE Main levelOne or more correct optionsDifficulty 2 of 3cb098

Select all the species with an MO bond order of 2.5.

A $N X_{2}$
B $NO$
C $O X_{2} X^{-}$
D $O X_{2} X^{+}$

Answer: B, D

O X_{2} X^{+}

(11 valence electrons) and

NO

(11 valence electrons) each have 8 bonding and 3 antibonding electrons, so bond order is 2.5.

O X_{2} X^{-}

has 1.5 and

N X_{2}

has 3.

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