Which of the following species is paramagnetic ?

Question

Which of the following species is paramagnetic ? (A) CO2 (B) NO (C) O2-2 (D) CN-

Tardigrade Admin · Accepted Answer

The molecular orbital configuration of NO is KK (σ 2s )2 ( overset*σ 2s)2 (σ 2 px)2 (π 2 py)2 (π 2 pz )2 ( overset*π 2 py )1 So, NO is paramagnetic because it contains one unpaired electron.

Q. Which of the following species is paramagnetic ?

$C O_{2}$

$NO$

$O_{2}^{2 -}$

$C N^{-}$

The molecular orbital configuration of $NO$ is
$KK (σ 2 s)^{2} (σ * 2 s)^{2} (σ 2 p_{x})^{2} (π 2 p_{y})^{2} (π 2 p_{z})^{2} (π * 2 p_{y})^{1}$
So, $NO$ is paramagnetic because it contains one unpaired electron.

Q. Which of the following species is paramagnetic ?

CO2​

NO

O22−​

CN−

The molecular orbital configuration of NO is KK(σ2s)2(σ∗2s)2(σ2px​)2(π2py​)2(π2pz​)2(π∗2py​)1 So, NO is paramagnetic because it contains one unpaired electron.

$C O_{2}$

$NO$

$O_{2}^{2 -}$

$C N^{-}$

The molecular orbital configuration of $NO$ is
$KK (σ 2 s)^{2} (σ * 2 s)^{2} (σ 2 p_{x})^{2} (π 2 p_{y})^{2} (π 2 p_{z})^{2} (π * 2 p_{y})^{1}$
So, $NO$ is paramagnetic because it contains one unpaired electron.