During change of O2 to O2- ion, the electron adds on which one of the following orbitals?

Question

During change of O2 to O2- ion, the electron adds on which one of the following orbitals? (A) π* orbital (B) π orbital (C) σ* orbital (D) σ orbit

Tardigrade Admin · Accepted Answer

Electronic configuration of mathrmO2 σ(1 s)2 σ*(1 s)2 σ(2 s)2 σ*(2 s)2 σ(2 pz)2 π(2 px)2 π(2 py)2 π*(2 px)1 π*(2 py)1 Thus, the incoming electron will enter in π* 2 px to form mathrmO2-

Q. During change of $O_{2}$ to $O_{2}^{-}$ ion, the electron adds on which one of the following orbitals?

$π^{*}$ orbital

$π$ orbital

$σ^{*}$ orbital

$σ$ orbit

Electronic configuration of $O_{2}$
$σ (1 s)^{2} σ^{} (1 s)^{2} σ (2 s)^{2} σ^{} (2 s)^{2} σ (2 p_{z})^{2} π (2 p_{x})^{2} π (2 p_{y})^{2}$ $π^{} (2 p_{x})^{1} π^{} (2 p_{y})^{1}$
Thus, the incoming electron will enter in $π^{*} 2 p_{x}$ to form $O_{2}^{-}$

Q. During change of O2​ to O2−​ ion, the electron adds on which one of the following orbitals?

π∗ orbital

π orbital

σ∗ orbital

σ orbit