Which one of the following is diamagnetic ?

1.	Which one of the following is diamagnetic ?
Answer» `O_(2)` `O_(2)^(2-)` `O_(2)_(2+)` NONE of these Solution :`O_(2)^(2-)` is diamagnetic. Additional TWO electrons are paired in anti-bonding MOLECULAR orbits `pi_(2py) and pi_(2py).`

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