MCQ
During the change of $O _{2}$ to $O _{2}^{-}$, the incoming electron goes to the orbital :
- A$\pi 2 p_{y}$
- B$\sigma^{*} 2 p_{z}$
- ✓$\pi * 2 p_{x}$
- D$\pi 2 p_{x}$
✓
Answer
Correct option: C.
$\pi * 2 p_{x}$
c
The electronic configuration of $O _{2}$ is,
The electronic configuration of $O _{2}$ is,
$\sigma 1 s^{2} \sigma^{*} 1 s^{2} \sigma 2 s^{2} \sigma^{*} 2 s^{2} \sigma 2 p_{z}^{2} \pi 2 p_{x}^{2}=\pi 2 p_{y}^{2} \pi * 2 p_{x}^{1}=\pi * 2 p_{y}^{1}$
When electron is added in $O _{2}$ to form $O _{2}^{-},$ the added electron goes to $\pi * 2 p_{x}$ or $\pi * 2 p_{y}$
Thus, option $( C )$ is correct.
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