Question

In Raman scattering, stokes and anti-stokes lines respectively represent lines with _____ and _____ wavelength.

Answer 1

Hint:In Raman scattering the energy increase or decrease from the excitation is related to the vibrational energy spacing in the ground electronic state of the molecule and as a result of these energy differences we can obtain

Complete Step by Step Answer:

It is the shift in wavelength of the elastically scattered radiation that produces the chemical and structural information remaining shifted photons can be of either higher or lower energy, depending upon the vibration state of the molecule under study. According to energy diagram stokes radiation occurs at lower energy than the ray light radiation and anti-stokes radiation has greater energy.The energy increase or decrease is related to the vibrational energy levels in the ground electronic state of molecules.
The energy of the scattered radiation is less than the incident radiation for the stokes line and the energy of the scattered radiation is more than the incident radiation for the anti-stokes line. Therefore, the wavelength of the strokes and anti-stokes lines are a direct measure of the vibrational energies of the molecule.Hence, the stroke line has high wavelengths and anti-stokes lines has least wavelength.
Note: In Raman scattering, the more intense strokes lines are normally measured. Raman scattering is a relatively weak process. The number of photons in raman scattering is quite small.