If a diatomic molecule is not rigid but has in addition a vibrational – McqOptions

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1.	If a diatomic molecule is not rigid but has in addition a vibrational mode then what is its 'Cv' equal to? ('Cv' is molar specific heat at constant volume)
A.	5R/2
B.	3R/2
C.	7R/2
D.	9R/2
Answer» D. 9R/2

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