Question

Bond order of `O_(2), O_(2)^(-) and O_(2)^(2-)` is in order
A. `O_(2) gt O_(2)^(+) gt O_(2)^(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 1

Correct Answer - c
Given species `O_(2) O_(2)^(-),O_(2)^(+)` and `O_(2)^(2-)`
Total number of electron
`{:(O_(2)rarr16e^(-)O_(2)^(-1),,17e^(-),O_(2)^(+1)rarr15e^(-),O_(2)^(-2)rarr,18e^(-),,),(,,O_(2)^(+1),O_(2),O_(2)^(-1),O_(2)^(-2),,),("Bond order",,2.5,2,1.5,1,,):}`
Higher bond order indicates greater stability
Stability order `[O_(2)^(+1) gt O_(2) O_(2)^(-1) gt O_(2)^(2+)]`