First slide

Molecular Orbital Theory

Question

Which of the following diatomic molecular species has only $π$ bonds according to Molecular Orbital Theory?

Moderate

A

${Be}_{2}$
B

$O_{2}$
C

$N_{2}$
D

$C_{2}$

Solution

$B e_{2} (8) : K K σ {(2 s)}^{2} σ^{} {(2 s)}^{2}$
$O_{2} (16) : K K σ (2 s^{2}) σ^{} (2 s^{2}) σ {(2 p_{z})}^{2} π {(2 p_{x})}^{2} π {(2 p_{y})}^{2} π^{} {(2 p_{x})}^{1} π^{} {(2 p_{y})}^{1}$
$N_{2} (14) : K K σ {(2 s)}^{2} σ^{} {(2 s)}^{2} π {(2 p_{x})}^{2} π {(2 p_{y})}^{2} σ {(2 p_{z})}^{2}$
$C_{2} (12) : K K σ {(2 s)}^{2} σ^{} {(2 s)}^{2} π {(2 p_{x})}^{2} π {(2 p_{y})}^{2}$
Therefore, $C_{2}$ contains $2 π$ bonds as it has 4 electrons in two pi-molecular orbitals

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App