- In HCl, absorption lines with wave numbers in inverse centimeters of
83.03, 103.73, 124.30, 145.05, 165.51 and 185.86 have been observed.
Are these rotational or vibrational transitions? Estimate some physical
parameters of the molecule from these data.
- What is the ratio of the number of HCl molecules in the
rotational state to that in the state if the gas is at room