Which motion(s) of CS₂ would be expected to be IR active? Select all the apply?

A. Symmetric stretch

B. Asymmetric stretch

C. Bending motion

D. Rotation motion

E. Translational motion

• B and C only
• A, C and D only
• B and D only
• C, D and E only
• A and C only

1. Asymetric stretching

2. Bending motion

Step-by-step explanation

In CS₂

_{The central atom is Carbon atom}

_{S = C =S}

_{The symmetric stretching will now be IR inactive}

The absence of a lone pair electrons makes the structure thus being associated with a stretch. Since Symmetric stretch is inactive.

Then

The active vibration motion now remains to be

Bending vibration motion

The S atoms bend up and down

2. Asymetric stretch.

The S molecule will thus be streched outsiech outsisdd