venytysvärähtelyjen
Venytysvärähtelyt, also known as stretching vibrations or simply stretching, refer to a type of molecular vibration where the distance between two atoms in a molecule changes periodically. This change in bond length can be an increase or decrease in the internuclear distance. In a diatomic molecule, there is only one stretching vibration mode, which is the symmetric stretching of the bond. For molecules with more than two atoms, stretching vibrations can occur in various ways.
In polyatomic molecules, stretching vibrations can be classified as symmetric or asymmetric. A symmetric stretching vibration
The frequency of a stretching vibration is primarily determined by the strength of the chemical bond and