The bond order in `O_2^-`ion is

Explanation

The MO configuration of superoxide ion `(O_(2)^(-))` is :
`KK(sigma2s)^(2)(sigma^(**)2s)^(2)(sigma2p_(z))^(2)(pi2p_(x))^(2)(pi2p_(y))^(2)(pi^(**)2p_(x))^(2)(pi^(**)2p_(y))^(1)`
`"Bond order"=(8-5)/(2)=1(1)/(2)`
The MO configuration of peroxide ion is `(O_(2)^(2-))` is
`KK(sigmas)^(2)(sigma^(**)2s)^(2)(sigma2p_(z))^(2)(pi2p_(x))^(2)(pi2p_(y))^(2)(pi^(**)2p_(x))^(2)(pi^(**)2p_(y))^(2)`
`"Bond order"=(8-6)/(2)=1`
So, bond order in superoxide ion is more than in perioxide ion.