Identify an element based on its PES (Photoelectron Spectroscopy).
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Identify the element shown in the PES below
Label the peaks on a PES spectrum with the corresponding subshell.
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In a PES spectrum of oxygen below , label which peaks correspond to 1s, 2s,
and 2p electrons.
Compare heights of peaks in the spectrum to determine the number of electrons in a subshell.
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If the 2p peak is three times the height of the 2s peak in a PES
spectrum, how many electrons are in each subshell?
A full 2s subshell contains 2 electrons. Therefore a 2p peak that is three times its heigth must have 6 electrons.
Explain differences between PES spectra of two atoms/ions.
- How would the PES spectrum of Na differ from that of Na+?
Na+ has 1 fewer electron than Na. Therefore the 3s peak will not exist in the Na+ spectrum.
Complete a partial PES by drawing a peak.
- Below is a partial photoelectron spectrum of chlorine. Draw the missing peak.
- Below is a partial photoelectron spectrum of chlorine. Draw the missing peak.
- How would the PES spectrum of Na differ from that of Na+?
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If the 2p peak is three times the height of the 2s peak in a PES
spectrum, how many electrons are in each subshell?
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In a PES spectrum of oxygen below , label which peaks correspond to 1s, 2s,
and 2p electrons.