Which of the following species has highest bond energy ?

Options

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

Answer

B

Explanation

`O_(2)^(+)=KK'sigma2s^(2),overset(**)sigma 2s^(2),sigma2p_(z)^(2),pi2p_(x)^(2)~~pi2p_(y)^(2)`,
`overset(**)2p_(x)^(1)~~t overset(**)(pi)2p_(y)^(0)`
Bond order `=(N_(b)_N_(a))/(2)=(8-3)/(2)-2.5`
Hence `,O_(2)^(+)` has highest bond energy .