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Chemistry

10th -

12thgrade

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AP Chem PES

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10 questions

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  • 1. Multiple Choice
    30 seconds
    2 pts
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    Refer to the photoelectron spectrum of neon shown below to answer the question.

    Peaks A, B, and C represent the binding energies of electrons in which subshells of neon?

    1s, 2s, 2p

    2p, 2s, 1s

    1s, 1s, 1s

    2s, 2p, 2p

  • 2. Multiple Choice
    30 seconds
    2 pts
    Image

    Refer to the photoelectron spectrum of neon shown below to answer the question.

    Which of the following statements best accounts for peak A being to the left of peaks B and C?

    The electron configuration of neon is 1s2 2s2 2p6.

    Neon has 8 electrons located in its valence shell.

    Core electrons of an atom experience a much higher effective nuclear charge than valence electrons

    Peaks B and C show first ionisation energies in neon, whereas peak A shows the second ionisation energy of neon

  • 3. Multiple Choice
    30 seconds
    2 pts
    Image

    Refer to the photoelectron spectrum of neon shown below to answer the question.

    Which of the following statements best accounts for peak C being three time the height of peak B?

    The intensity of the photoelectron signal at a given energy is a measure of the number of electrons in that energy level.

    Electrons represented by peak B have approximately triple the binding energy than those represented by peak C

    In a photoelectron spectrum, as binding energy increases the relative number of electrons decreases.

    The height of peaks in a photoelectron spectrum does not have any relation to the structure of the atom

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