The frequencies of the first and second overtones respectively are exactly double and triple of the fundamental vibration frequency. Comment.
For a vibrating system like a diatomic molecule, the fundamental frequency ( \nu_1 ) corresponds to the transition from the ground vibrational level ( v = 0 ) to ( v = 1 ). In the harmonic approximation, the vibrational energy levels are equally spaced and given by [ E_v _____ _________ ____ __________ _________ _____ ___ _______ ______.
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