Question

The degree of freedom of diatomic gases is - ​

Answer 1

A diatomic gas molecule has 6 degrees of freedom. This set may be decomposed in terms of translations, rotations, and vibrations of the molecule. The center of mass motion of the entire molecule accounts for 3 degrees of freedom. In addition, the molecule has two rotational degrees of motion and one vibrational mode.

Answer 2

formula of degree of freedom is

f = 3N - k

here N is no. of atoms in each molecule

K is no. of relations between them

for diatomic gases

DOF = 3N - k

N = 2

k = 1

therefore. DOF = 3 x 2 - 1 = 5


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