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Identify the statement that is NOT correct.

1. N2 has greater dissociation energy than N2+
2. O2 has lower dissociation energy than O2+
3. Bond length in N2+ is less than N2
4. Bond length in NO+ is less than in NO

Correct answer: Bond length in N2+ is less than N2

Solution

N2 has bond order 3; N2+ loses a bonding electron giving bond order 2.5, so N2+ has a longer (not shorter) bond than N2, making that statement incorrect.

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