Question

Number of degree of freedom of a molecule of Oxygen \((O_{2})\) gas is

• A. 9
• B. 7
• C. 3
• D. 5

Hint:

Diatomic gases generally have 5 degrees of freedom at room temperature.

Answer 1

The Correct Option is D

Concept:
Degree of freedom represents independent ways in which a molecule can store energy.
Step 1:
\(O_{2}\) is a diatomic molecule.
Step 2:
Every gas molecule has: \[ 3 \] translational degrees of freedom.
Step 3:
Diatomic molecules have: \[ 2 \] rotational degrees of freedom.
Step 4:
\[ f=3+2=5 \] \[ \boxed{f=5} \] \[ \boxed{\text{Correct Option = (4)}} \]