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- 7) Explain the basis of the Franck-Condon principle and how it leads to the formation of a vibrational progression.Emission 0.26 0.24 0.22 0.20 0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04 300 350 400 450 Wavelength (nm) 500 550 According to the spectrum, the most intense light emitted results from the following types of transition in it's molecules. Electronic transitions from high to low energy states O Vibrational transitions from low to high energy states Vibrational transitions from high to low energy states Electronic transitions from low to high energy statesWhat are the atomic term symbols for an electronic configuration of s2p?
- Define the term rotational motion?Beta-carotene is an organic compound with an orange color. The diagram above shows the ultraviolet spectrum of beta-carotene. Which of the following statements is true about the absorption bands in the spectrum?(see attached image) a.) The absorption band between 250250 and 320 nm320 nm is due to transitions in electronic energy levels, and the absorption band between 380 and 520 nm is due to transitions in molecular vibrational levels. b.) The absorption band between 250 and 320 nm is due to transitions in molecular vibrational levels, and the absorption band between 380 and 520 nm is due to transitions in molecular rotational levels. c.) The two main absorption bands are associated with transitions in electronic energy levels. The band in the region corresponding to shorter wavelengths shows a lower absorbance than the band in the region corresponding to longer wavelengths. d.) The two main absorption bands are associated with transitions in molecular vibrational levels.…8. Electronic Spectroscopy. Vibrational spectroscopy refers to changes in vibrational energy levels. Electronic spectroscopy refers to the photon energy absorbed or emitted by a molecule from electron transitions between different possible electronic states. On the diagram below, Draw arrows to illustrate the processes, and Label with the letters shown in bold. a) Franck-Condon principle for electronic excitation (F-C), from vibrational ground state v = 0. b) Collisional Relaxation in the excited states without photon emission (CR) c) Return to the ground state via Fluorescence (F) d) Intersystem Crossing (ISC) e) Return to the ground state via Phosphorescence (P) f) Infra Red absorbance of one quantum of vibrational energy from v = 0 in the ground state (IR) Raman scattering that allows transition from v = 0 to v = 1, in the ground state (RAMAN) On the x-axis, indicate the bond lengths re and ro for the ground electronic state only. Draw an arrow to show the magnitude of the Zero…
- Which of the following transitions will require the longest wavelength of an electromagnetic radiation? Electronic excitation from the ground state to the first excited state Electronic excitation from the third excited state to the fourth excited state Electronic excitation from the first excited state to the second excited state Electronic excitation from the fourth excited state to the fifth excited state Electronic excitation from the second excited state to the third excited stateExplain the orig in of the Franck-Condon principle and how it leads to the appearance of vibrational structure in an electronic transition.8 Order the transitions of a vibrational-rotational spectrum by their energy change. Use figure 9 on page 474. v=1 v=0 ▬▬▬ P Highest PR branch: (v=0, J = 1) to (v=1, J =2) PR branch: (v=0, J-0) to (v=1,J=1) Frequency, v PP branch: (v=0, J = 2) to (v=1, J =1) Lowest FP branch: (v=0, J = 1) to (v=1, J =0) Q Qbranch: (v=0, J = 0) to (v=1, J =0) R