Question

Find the degree of freedom of a tri-atomic gas.

Answer 1

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Answer 2

in case of a non-linear molecule with N atoms has 3N-6 modes of vibration. A non-linear triatomic molecule has threedegrees of freedom. In total, there are 9 possible degrees of freedom (3 translational, 3 rotational, and three vibrational), but only 7 are accessible at lower temperatures.