Question

How many electrons are there in the antibonding molecular orbitals of $O_2^{+}?$

Answer 1

Electronic configuration of $O_2^{+}$ is

${\sigma }_{1s}^2\sigma {\ast }_{1s}^2{\sigma }_{2s}^2\sigma {\ast }_{2s}^2{\sigma }_{2p_z}^2\left[\begin{array}{c}{\pi }_{2p_x}^2\\ {\pi }_{2p_y}^2\end{array}\right]\pi {\ast }_{2p_x}^1$

$\therefore$ Number of electrons in antibonding molecular orbitals $=5$