Which of the following is paramagnetic with bond order `0.5`?

Options

A. `F_2`
B. `H_2^(+)`
C. `N_2`
D. `O_2^(-)`

Answer

B

Explanation

`H_2^(+):(sigma_(1s))^1`
B.O.=`(1-0)/2=1/2=0.5`
`H_2^(+)` is paramagnetic with bond order 0-5