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The pairs of species of oxygen and their magnetic behaviours are noted below . Which of the following presents the correct description ?A. `O_(2)^(-), O_(2)^(2)` - Bone diamagneticB. `O^(+) , O_(2)^(2)` - Both paramagneticC. `O_(2)^(+), O_(2)` - Both paramagneticD. `O, O_(2)^(2-)` - Both paramagnetic |
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Answer» Correct Answer - C `O_(2)` has two unpaired electrons in `pi_(2p_(x)) and pi_(2p_(y)) `, i.e.,` pi_(2p_(x))^(**1)pi_(2p_(x))^(**2)` `O_(2)^(-)` will have one upaired electron , `O_(2)^(2-)` will have no unpaired electron, `O_(2)^(+)` will have one unprired electron, `""_(8) O = 1s^(2) 2s^(2) 2p_(x)^(2) 2p_(y)^(1) 2p_(z)^(1)` and thus has two unpaired electrons , `O^(+)` will have one unpaired electron . Thus , `O_(2)^(+) and O_(2)` contain unpaired electrons and hence will be both paramagnetic . |
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