Hi guys! I need your help! 1. The problem statement, all variables and given/known data Use the function of Lennard-Jones V (R) = ε [(σ / R)12 - (σ / R)6] as model for the adiabatic potential energy in function of the separation between the 11B boron and nitrogen nuclei 14N. You determine the parameters ε and σ to reproduce the spectroscopic values of the vibrational quantum, ν = 1514.6 cm-1, and the separation of 1,666 cm-1 between the lines of rotational BN molecule. 3. The attempt at a solution I have ΔErot=ħ2/I=1.666 cm-1=3.3091*10-23 J ⇒ I=ħ2/ΔErot=3.3603*10-46 Kgm2 and R0=√(I/μ)=1.8125*10-10 m At this point, I calculating the minimum oh the potential: V(0)=∂V(R)/∂R =0 ⇒ R06=2σ6 ⇒ σ=6√(R06/2)=1.6147*10-10 m For ε, I calculating k by: k=∂2V(R)/∂R2=6σ6εR-14(26σ6-7R6) but here I'm lost... Who can help me? Please!