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Decreasing order of stability of `O_(2), O_(2)^(-), O_(2)^(+)` and `O_(2)^(2-)` isA. `O_(2) gt O_(2)^(+) gt O_(2)^(-) gt O_(2)^(-)`B. `O_(2)^(-) gt O_(2)^(2-) gt O_(2)^(+) gt O_(2)`C. `O_(2)^(+) gt O_(2) gt O_(2)^(-) gt O_(2)^(2-)`D. `O_(2)^(2-) gt O_(2)^(-) gt O_(2) gt O_(2)^(+)`

Answer» Correct Answer - 3
Stability of `alpha` Bond order
i.e, higher to bond order ,greater the stability.
According to `MOT`
Bond order `=(1)/(2)[N_(b)-N_(a)]`
`O_(2)`: Bond order `implies(1)/(2)[10-6]=2`
`O_(2)^(-)`: Bond order `implies(1)/(2)[10-7]=1.5`
`O_(2)^(+)`: Bond order :` rArr (1)/(2)[10-5]=2.5`
`O_(2)^(2-)`: Bond order `implies(1)/(2)[10-8]=1.0`
Thus, desreasing order of stability is
`O_(2)^(+) gt O_(2) O_(2)^(-) gt O_(2)^(2-)`


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