Question

During the change of $O_2$ to $O_2^{-}$ , the incoming electron goes to the orbital :

• A. ${\sigma }^{\ast }{}^2{P}_z$
• B. $\pi {}^2{P}_y$
• C. ${\pi }^{\ast }{}^2{P}_x$
• D. $\pi {}^2{P}_x$

Answer 1

Answer: (C)

Molecular orbital diagram of $O_2$ is
An incoming electron will go in ${\pi }_{2p_x}^{\ast }$ orbital