Investigators have reported experimental observation of the He2 ‘complex' (i.e., a very weakly bonded molecule). The fact that the observation required temperatures in the neighborhood of 1 mK is consistant with computational studies that hcDe for He2 is 1.51 ×10^-23 J, hcD0 about 2 × 10^-26 J, and Re about 297 pm. a. Estimate the fundamental vibrational frequency , force constant, moment of intertia, and rotational constant based on the harmonic oscillator and rigid rotor approximation.