How to Calculate the Wavenumber in Raman Spectroscopy for Ethene?

[baldywaldy]

Homework Statement

The Raman spectrum of ethene, obtained using 488.0nm radiation from a laser, shows an intense line at 540.0nm. Calculate the wavenumber for this vibration


I know that you get stokes, anti-stokes and rayleigh scattering. Not sure how to calculate the wavenumber though . I know its not as simple as taking the reciprical of the wavelength though


thanks

 

[chemisttree]

Try to Wiki Raman spectroscopy. Pretty simple IMO but not as simple as just asking for the answer, eh?