According to MO theory, | Chemistry | SolveeIt

According to MO theory,

$O_2^+$ is paramagnetic and bond order greater than $O_2$

$O_2^+$ is paramagnetic and bond order less than $O_2$

$O_2^+$ is DIamagnetic and bond order less than $O_2$

$O_2^+$ is DIamagnetic and bond order is more than $O_2$

Answer

$O_2^+$ is paramagnetic and bond order greater than $O_2$

Explanation

I and II are hyperconjugation structures of propene and
involves o-electrons of C-H bond and p-orbitals of pi bond
in delocalisation.

Chemistry Question on Molecular Orbital Theory