Question

Which statements are correct about degrees of freedom?

1. A molecule with n degrees of freedom has n² different ways of storing energy.
2. Each degree of freedom is associated with `1/2`RT average energy per mole.
3. A monoatomic gas molecule has 1 rotational degree of freedom whereas the diatomic molecule has 2 rotational degrees of freedom.
4. CH₄ has a total of 6 degrees of freedom.

Choose the correct answer from the option given below:

Options

• B and C only

• B and D only

• A and B only

• C and D only

Answer 1

B and D only

Explanation:

According to the law of equipartition energy associated with each degree of freedom is `1/2`RT per mole.

CH₄ is a tetrahedron molecule.

Degree of freedom due to rotation = 3

Degree of freedom due to translation = 3