Exams › NEET › Chemistry

Mark the incorrect statement in the following:

1. The bond order in the species O2, O2+ and O2− decreases as O2+ > O2 > O2−
2. The bond energy in a diatomic molecule always increases when an electron is lost
3. Electrons in antibonding M.O. contribute to repulsion between two atoms
4. With increase in bond order, bond length decreases and bond strength increases

Correct answer: The bond energy in a diatomic molecule always increases when an electron is lost

Solution

Statement B is incorrect because the bond energy does not always increase when an electron is lost; it depends on whether the electron is removed from a bonding or antibonding molecular orbital.

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