Chemistry

Problem

A partial photoelectron spectrum of an unknown second-period element shows only two peaks in the valence region. • Peak A (lower binding energy) has a relative area of 6. • Peak B (higher binding energy) has a relative area of 2. Which valence-shell electron configuration best matches the spectrum? a)

2s^{2} 2p^{2}

2s^{1} 2p^{6}

2s^{2} 2p^{6}

2s^{2} 2p^{4}

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