Magnification m 17 15 13 11 9 lonization energy, l/eV Figure 11.3 The photoelectron spectrum of HBr. P11F.5 You are now ready to understand more deeply the features of photoelectron spectra (Topic 9B). Figure 11.3 shows the photoelectron spectrum of HBr. Disregarding for now the fine structure, the HBr lines fall into two main groups. The least tightly bound electrons (with the lowest ionization energies and hence highest kinetic energies when ejected) are those in the lone pairs of the Br atom. The next ionization energy lies at 15.2 eV, and corresponds to the removal of an electron from the HBr o bond. (a) The spectrum shows that ejection of a o electron is accompanied by a lot of vibrational excitation. Use the Franck-Condon principle to account for this observation. (b) Go on to explain why the lack of much vibrational structure in the other band is consistent with the nonbonding role of the Br4p, and Br4p, lone-pair electrons. E jeubis

Magnification m 17 15 13 11 9 lonization energy, l/eV Figure 11.3 The photoelectron spectrum of HBr. P11F.5 You are now ready to understand more deeply the features of photoelectron spectra (Topic 9B). Figure 11.3 shows the photoelectron spectrum of HBr. Disregarding for now the fine structure, the HBr lines fall into two main groups. The least tightly bound electrons (with the lowest ionization energies and hence highest kinetic energies when ejected) are those in the lone pairs of the Br atom. The next ionization energy lies at 15.2 eV, and corresponds to the removal of an electron from the HBr o bond. (a) The spectrum shows that ejection of a o electron is accompanied by a lot of vibrational excitation. Use the Franck-Condon principle to account for this observation. (b) Go on to explain why the lack of much vibrational structure in the other band is consistent with the nonbonding role of the Br4p, and Br4p, lone-pair electrons. E jeubis

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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