Number of unpaired electrons in O2 molecule is

Question

Number of unpaired electrons in O2 molecule is (A) zero (B) one (C) two (D) four

Tardigrade Admin · Accepted Answer

O 2=8+8 =16 =σ 1 s2, overset*σ 1 s2, σ 2 s2, overset*σ 2 s2, σ 2 pz2 π 2 py2, π 2 px2, overset*π 2 py1 overset*π 2 px1 ∴ Number of unpaired electrons =2

Q. Number of unpaired electrons in $O_{2}$ molecule is

zero

one

two

four

$O_{2} = 8 + 8 = 16$
$= σ 1 s^{2}, σ * 1 s^{2}, σ 2 s^{2}, σ * 2 s^{2}, σ 2 p_{z}^{2}$
$π 2 p_{y}^{2}, π 2 p_{x}^{2}, π * 2 p_{y}^{1} π * 2 p_{x}^{1}$
$∴$ Number of unpaired electrons $= 2$

Q. Number of unpaired electrons in O2​ molecule is

zero

one

two

four

O2​=8+8=16 =σ1s2,σ∗1s2,σ2s2,σ∗2s2,σ2pz2​ π2py2​,π2px2​,π∗2py1​π∗2px1​ ∴ Number of unpaired electrons =2

Q. Number of unpaired electrons in $O_{2}$ molecule is

$O_{2} = 8 + 8 = 16$
$= σ 1 s^{2}, σ * 1 s^{2}, σ 2 s^{2}, σ * 2 s^{2}, σ 2 p_{z}^{2}$
$π 2 p_{y}^{2}, π 2 p_{x}^{2}, π * 2 p_{y}^{1} π * 2 p_{x}^{1}$
$∴$ Number of unpaired electrons $= 2$