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Photoelectron spectroscopy

Chemistry • Electrons in Atoms • Original Scenario-Based • 1 questions

Photoelectron spectroscopy Original Scenario-Based Download PDF

Chemistry · Atomic Structure · Chemistry · Electrons in Atoms

1 Chemistry practice questions on Photoelectron spectroscopy. Questions built around original scenarios.

Questions

  1. 1.

    During an expedition to an uncharted asteroid, a science rover vaporizes a pure elemental sample and obtains a photoelectron spectrum displaying five discrete peaks with relative signal intensities of 2 : 2 : 6 : 2 : 4, listed in order from highest to lowest binding energy. Based on the principles of photoelectron spectroscopy, which deduction accurately describes this element and its spectrum?

    • A) The five discrete peaks indicate that the atom contains electrons distributed across five principal energy levels.
    • B) The peak with the highest relative intensity corresponds to the electrons requiring the greatest energy to eject from the atom.
    • C) The peak at the highest binding energy represents the removal of valence electrons because they encounter incoming photons first.
    • D) The peak at the lowest binding energy corresponds to the 3p subshell, and its relative height indicates that four electrons are held with the least attraction to the nucleus.