(a) Consider the hydrogen molecule (H2) to be a simple harmonic oscillator with an equilibrium spacing of 0.074 nm, and estimate the vibrational energy-level spacing for H2. The mass of a hydrogen atom is 1.67 x 10-27 kg.
(b) Use the results of part (a) to calculate the vibrational energy level spacing for the deuterium molecule, D2. Assume that the spring constant is the same for D2 as for H2. The mass of a deuterium atom is 3.34 x 10-27 kg.