A m o n g   H 2 ,   H e 2 + ,   L i 2 ,   B e 2 ,   B 2   , C 2 ,   N 2 ,   O 2 - ,   a n d   F 2   , the number of diamagnetic species is - (Atomic number : H   =   1 ,   H e   =   2 ,   L i   =   3 ,…

Question

A m o n g &#160; H 2 , &#160; H e 2 + , &#160; L i 2 , &#160; B e 2 , &#160; B 2 &#160; , C 2 , &#160; N 2 , &#160; O 2 - , &#160; a n d &#160; F 2 &#160; , the number of diamagnetic species is - (Atomic number : H &#160; = &#160; 1 , &#160; H e &#160; = &#160; 2 , &#160; L i &#160; = &#160; 3 , &#160; B e &#160; = &#160; 4 , &#160; B &#160; = &#160; 5 , &#160; C &#160; = &#160; 6 , &#160; N &#160; = &#160; 7 , &#160; O &#160; = &#160; 8 &#160; , &#160; F &#160; = &#160; 9 )

Aicharya · Accepted Answer

H 2 ⇒ σ 1 s 2 (Diamagnetic) H e 2 + ⇒ σ 1 s 2 σ * 1 s 1 (Paramagnetic) L i 2 ⇒ σ 1 s 2 σ * 1 s 2 σ 2 s 2 (Diamagnetic) B e 2 ⇒ σ 1 s 2 σ * 1 s 2 σ 2 s 2 σ * 2 s 2 (Does not exist) B 2 ⇒ σ 1 s 2 σ * 1 s 2 σ 2 s 2 σ * 2 s 2 π 2 p x 1 = π 2 p y 1 (Paramagnetic) C 2 ⇒ σ 1 s 2 σ * 1 s 2 σ 2 s 2 σ * 2 s 2 π 2 p x 2 = π 2 p y 2 (Diamagnetic) N 2 ⇒ σ 1 s 2 σ * 1 s 2 σ 2 s 2 σ * 2 s 2 π 2 p x 2 = π 2 p y 2 σ 2 p z 2 (Diamagnetic) O 2 Θ ⇒ 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 2 = π * 2 p y 1 (Paramagnetic) F 2 ⇒ σ 1 s 2 σ * 1 s 2 σ 2 s 2 σ * 2 s 2 σ 2 o z 2 π 2 p x 2 = π 2 p y 2 π * 2 p x 2 = π * 2 p y 2 (Diamagnetic)

A m o n g   H 2 ,   H e 2 + ,   L i 2 ,   B e 2 ,   B 2   , C 2 ,   N 2 ,…

Solution

$H_{2} \Rightarrow σ 1 s^{2}$	(Diamagnetic)
$H e_{2}^{+} \Rightarrow σ 1 s^{2}$ $σ^{*} 1 s^{1}$	(Paramagnetic)
$L i_{2} \Rightarrow σ 1 s^{2} σ^{*} 1 s^{2} σ 2 s^{2}$	(Diamagnetic)
$B e_{2} \Rightarrow σ 1 s^{2} σ^{} 1 s^{2} σ 2 s^{2} σ^{} 2 s^{2}$	(Does not exist)
$B_{2} \Rightarrow σ 1 s^{2} σ^{} 1 s^{2} σ 2 s^{2} σ^{} 2 s^{2} π 2 p_{x}^{1} = π 2 p_{y}^{1}$	(Paramagnetic)
$C_{2} \Rightarrow σ 1 s^{2} σ^{} 1 s^{2} σ 2 s^{2} σ^{} 2 s^{2} π 2 p_{x}^{2} = π 2 p_{y}^{2}$	(Diamagnetic)
$N_{2} \Rightarrow σ 1 s^{2} σ^{} 1 s^{2} σ 2 s^{2} σ^{} 2 s^{2} π 2 p_{x}^{2} = π 2 p_{y}^{2} σ 2 p_{z}^{2}$	(Diamagnetic)
$O_{2}^{Θ} \Rightarrow σ 1 s^{2} σ^{} 1 s^{2} σ 2 s^{2} σ^{} 2 s^{2} σ 2 p_{z}^{2} π 2 p_{x}^{2} = π 2 p_{y}^{2} π^{} 2 p_{x}^{2} = π^{} 2 p_{y}^{1}$	(Paramagnetic)
$F_{2} \Rightarrow σ 1 s^{2} σ^{} 1 s^{2} σ 2 s^{2} σ^{} 2 s^{2} σ 2 o_{z}^{2} π 2 p_{x}^{2} = π 2 p_{y}^{2} π^{} 2 p_{x}^{2} = π^{} 2 p_{y}^{2}$	(Diamagnetic)

A m o n g &#160; H 2 , &#160; H e 2 + , &#160; L i 2 , &#160; B e 2 , &#160; B 2 &#160; , C 2 , &#160; N 2 ,…

Solution

A m o n g H 2 , H e 2 + , L i 2 , B e 2 , B 2 , C 2 , N 2 ,…