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JEE Main levelSingle correct optionDifficulty 2 of 3cb097

Which pair of homonuclear diatomic species has the same bond order (MO theory)?

A $B X_{2}$ and $O X_{2}$
B $C X_{2}$ and $O X_{2}$
C $N X_{2}$ and $O X_{2}$
D $B X_{2}$ and $N X_{2}$

Answer: B

The bond orders are

B X_{2}

= 1,

C X_{2}

= 2,

N X_{2}

= 3 and

O X_{2}

= 2. Only

C X_{2}

and

O X_{2}

match.

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