Consider the following spectrum of a diatomic molecule, obtained at 305.00K.

Use the information contained in this spectrum to answer the different parts of this problem. The reduced mass of this molecule is =1.1031 x 10-26 kg. Calculate r, the bond length of this molecule. Calculate the ratio n J=3/ n J=0 for a temperature of T=305.00 K. Why is there no line (peak) at position 2145 cm-1 in this spectrum?

1. The bond length of this molecule is r= ___________m

2. For this molecule, at the given temperature n J=3/ n J=0 = _______________

The reason there is no line (peak) at position 2145 cm-1 in this spectrum is ______________________

10 relative intensity 5 0 2000 IT 2050 2100 2150 2200 2250 wavenumber /cm