?The highest kinetic energy electrons in the photoelectron spectrum of \(\mathrm{H}_{2}

Chapter 11, Problem P11F.6

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The highest kinetic energy electrons in the photoelectron spectrum of \(\mathrm{H}_{2} \mathrm{O}\) using 21.22 eV radiation are at about 9 eV and show a large vibrational spacing of 0.41 eV. The symmetric stretching mode of the neutral \(\mathrm{H}_{2} \mathrm{O}\) molecule lies at 3652 \(\mathrm{cm}^{-1}\). (a) What conclusions can be drawn from the nature of the orbital from which the electron is ejected? (b) In the same spectrum of \(\mathrm{H}_{2} \mathrm{O}\), the band near 7.0 eV shows a long vibrational series with spacing 0.125 eV. The bending mode of \(\mathrm{H}_{2} \mathrm{O}\) lies at 1596 \(\mathrm{cm}^{-1}\). What conclusions can you draw about the characteristics of the orbital occupied by the photoelectron?

Text Transcription:

H_2O

cm^-1