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Give the expression for the vibrational ...

Give the expression for the vibrational energy of molecules?

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Vibrational energy of a molecule has both kinetic and potential energy modcs connected by vibrational variables of motion viz y and `((dy)/(dt))`.
i.e. Vibrational energy = `(1)/(2)m((dy)/(dt))^(2)+(1)/(2)K_(r)y^(2) where `K_(r)` is a force constant of the oscillator and y the vibrational coordinates.
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