1.

The bond length the species `O_(2), O_(2)^(+) and O_(2)^(-)` are in the order ofA. `O_(2)^(+) gt O_(2) gt O_(2)^(-)`B. `O_(2)^(+) gt O_(2)^(-) gt O_(2)`C. `O_(2) gt O_(2)^(+) gt O_(2)^(-)`D. `O_(2)^(-) gt O_(2) gt O_(2)^(+)`

Answer» Correct Answer - D
`O_(2)^(-) gt O_(2) gt O_(2)^(+)`
Lesser the bond order, more will be the bond length.
`B.O. : O_(2)^(-) (1.5),O_(2)(2.0),O_(2)^(+) (2.5).`


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