Question

caluclation no. of degree of freedom for triatomic linear molecule​

Answer 1

Answer:

9

Explanation:

A triatomic molecule has 9 degrees of freedom, in general. There are 3 translational modes, 3 rotational and 3 vibrational. The "6 degrees of freedom" triatomic molecule neglects the vibration modes, which usually are not active at room temperature. Same as for diatomic gas (6 degrees of freedom) the vibration mode does not contribute to heat capacity at room temperature so the gas has only 5 active modes.

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