Question: During the change of $\mathrm{O}_{2}$ to $\mathrm{O}_{2}^{-}$, the incoming electron goes to the orbital:
$\sigma^{*} 2 P_{z}$
$\pi^{2} \mathrm{P}_{\mathrm{y}}$
$\pi^{2} 2 \mathrm{P}_{\mathrm{x}}$
$\pi^{2} \mathrm{P}_{x}$
Correct Option: , 3
Solution:
Molecular orbital diagram of $\mathrm{O}_{2}$ is
An incoming electron will go in $\pi_{2 p_{x}}^{*}$ orbital.
