Which of the following is paramagnetic and has a bond order of 1/2?

Options

A. `F_(2)`
B. `H_(2)^(+)`
C. `N_(2)^(+)`
D. `O_(2)`

Answer

B

Explanation

`H_(2)^(+)=sigma1s^(1)` (According to molecular orbital theory)
Bond order Bonding electrons
`=(-"antibonding electrons")/(2)`
`=(1)/(2)=0.5`
`H_(2)^(+)` is paramagnetic due to the presence of one unpaired electron.