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Why rotational degree of freedom for an atom is zero. 
6 months ago

Answers : (2)

Vikas TU
7263 Points
							
The simple reason is due to moment of inertia about the line, the axis joining the point like 2 – atoms.
The atoms passing through the axis has net moment of inertia as zero. And therefore rotational energy that is :
RKE = 0.5Iw^2 = 0.
6 months ago
Arun
21485 Points
							
Rotation about the line between point-like atoms gives no degree of freedom because the moment of inertia about that axis is zero and hence there is no rotational energy.
6 months ago
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