The frequency of the stretching vibration of a bond in IR spectroscopy depends on what two quantities?

Question

Quizplus · Accepted Answer

The frequency of the stretching vibration of a bond in IR spectroscopy depends on the masses of the atoms and the stiffness of the bond. The frequency of a bond's stretching vibration is proportional to the square root of the bond stiffness and inversely proportional to the square root of the reduced mass of the two atoms in the bond. Hence, the two quantities that affect the frequency of the stretching vibration are the masses of the atoms and the stiffness of the bond.

The Frequency of the Stretching Vibration of a Bond in IR