Using `MO` theory predict which of the following sepcies has the shortest bond length ?

Options

A. `O_(2)^(2+)`
B. `O_(2)^(+)`
C. `O_(2)^(-)`
D. `O_2^(2-)`

Answer

A

Explanation

Bond order of ` O_(2)^(+) , O_2^(-),O_(2)^(2-)` and `O_(2)^(2+)` are ` 2. 5 , 1 . 5 , 1` and 30 respectively .
` :.` Bond order `prop (1)/("Bond length")` .