Suppose the hydrogen atom in HF (see Exercise 42.13) is replaced by an atom of deuterium, an isotope of hydrogen with a mass of 3.34 x 10-27 kg. The force constant is determined by the electron configuration, so it is the same as for the normal HF molecule.
(a) What is the vibrational frequency of this molecule?
(b) What wavelength of light corresponds to the energy difference between the n = 1 and n = 0 levels? In what region of the spectrum does this wavelength lie?