Question: The mass of the deuterium molecule (D2) is twice that of the hydrogen molecule (H2). If the vibrational frequency of H2 is 1.30, 1014 Hz,

The mass of the deuterium molecule (D2) is twice that of the hydrogen molecule (H2). If the vibrational frequency of H2 is 1.30, 1014 Hz, what is the vibrational frequency of D2? Assume that the “spring constant” of attracting forces is the same for the two molecules.

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