Abstract: The electronic spectra within UV-Vis region for benzene (C6H6) and Carbone tetrachloride (CCl4) molecules have been studied. Since Benzene molecule belongs to D6h point group, with very high symmetry elements, therefore it may be expected for its internal vibrations to be either infrared or Raman active only. The spectral properties of (CCl4) are also have been studied. This (CCl4) belongs to Td point group, where its fundamental internal vibrations will be also, infrared or Raman actives. These aspects will be considered and discussed in this work.