Question

As we will see later in this course, bond vibrations can bewell-approximated by
harmonic oscillators and molecular rotation can bewell-approximated by a rigid
rotor. Consider the ^1H^35Cl molecule, which has a bond length of127.45 pm, a bond-
vibration force constant of 516.3 N m-1, and individual atomicmasses of 1:007 8250
and 34:968 853.
What wavelength of light would be absorbed in a transition from J =0 to
J = 1? (Assume that the vibrational state does not change.)