AP®︎ Chemistry: Topic 1.6 Flashcards

Master key terms and definitions for Topic 1.6 of AP Chemistry – Photoelectron Spectroscopy to help you prep for quizzes and the AP exam.

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Term

Photoelectron Spectroscopy (PES)

Definition

A technique that measures electron binding energies by ejecting electrons with high-energy photons.

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Photoelectron Spectroscopy (PES)

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A technique that measures electron binding energies by ejecting electrons with high-energy photons.

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Binding Energy

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The energy required to remove an electron from an atom, ion, or subshell.

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Ground-State Electron Configuration from PES

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Assign peaks to subshells by binding energy and use peak sizes to count electrons.

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Photoelectric Effect and PES

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Photons eject electrons only if they provide enough energy to overcome the electrons' binding energies.

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Interpreting a Photoelectron Spectrum

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A graph where each subshell forms a peak whose position shows binding energy and height shows electron count.

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Electron-Nucleus Attraction in PES

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Electrons closer to the nucleus have higher binding energies than valence electrons because attraction is stronger.

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