Question: - Rotationally Raman active molecule must: * Have a permanent dipole moment. * Change their dipole moment upon vibration - Be isotropically polarizable. - Be

- Rotationally Raman active molecule must: * Have a permanent dipole moment. * Change their dipole moment upon vibration - Be isotropically polarizable. - Be anisotropically polarizable. "All of the above. - The wavenumber of the fundamental vibrational transition, v, of Cl2 molecule obtained from the vibrational Raman spectrum is 959.7cm1. Assuming that the energy levels are none-degenerate, calculate the energy separation between the vibrational energy levels? 1.901020J1.301011J6.161013J4.161023J4.161021J - The spin angular momentum quantum number of photon is unity. What is/are the z-components of its spin angular momentum? * h only h and hh only 1.414h None of the answers - Considering the selection rules for electronic atomic transitions, (=1 and m=0 or 1), which he following statements is incorrect? s to p transitions are allowed. Is to d transitions are not allowed * All p to d transitions are allowed

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