A) 2
B) 4
C) 6
D) 8
Correct Answer: C
Solution :
Key Idea: A triatomic molecule can rotate about any of three co-ordinate axes. The molecule of a triatomic gas has a tendency of rotating about any of three co-ordinate axes. So, it has 6 degrees of freedom, 3 translational and 3 rotational. At high enough temperature, a triatomic molecule has 2 vibrational degrees of freedom. But as temperature requirement is not given, so we answer simply by assuming triatomic gas molecule at room temperature. Thus, \[f=6\] (3 translational + 3 rotational) at room temperature.You need to login to perform this action.
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