WorksheetsAP Chem 1.6 PES Diagrams 2026
Total questions: 11
Worksheet time: 42mins
What is the electron configuration for this PES graph?
1s22s22p63s23p2
1s22s22p63s23p1
1s22s22p63s23p3
1s22s22p63s2
Which element is represented by this PES graph?
aluminum
phosphorus
sulfur
silicon
Which element is represented by this PES graph?
argon
potassium
calcium
scandium
Which element is represented by this PES graph?
calcium
potassium
titanium
scandium
The photoelectron spectra above show the energy required to remove a 1s electron from a nitrogen atom and from an oxygen atom. Which of the following statements best accounts for the peak in the upper spectrum being to the right of the peak in the lower spectrum?
Nitrogen atoms have a half-filled p subshell.
There are more electron-electron repulsions in oxygen atoms than in nitrogen atoms.
Electrons in the p subshell of oxygen atoms provide more shielding than electrons in the p sub shell of nitrogen atoms.
Nitrogen atoms have a smaller nuclear charge than oxygen atoms.
The complete photoelectron spectrum for an element is shown above. Which of the following observations would provide evidence that the spectrum is consistent with the atomic model of the element?
A neutral atom of the element contains exactly two electrons.
The element does not react with other elements to form compounds.
In its compounds, the element tends to form ions with a charge of +1.
In its compounds, the element tends to form ions with a charge of +3.
The photoelectron spectra of the 1s electrons of two isoelectronic species, Ca2+ and Ar, are shown above. Which of the following correctly identifies the species associated with peak X and provides a valid justification?
Ar, because it has completely filled energy levels.
Ar, because its radius is smaller than the radius of Ca2+
Ca2+, because its nuclear mass is greater than that of Ar
Ca2+, because its nucleus has two more protons than the nucleus that Ar has
In a photoelectron spectroscopy diagram, the core electrons represented by the peaks closest to the .....
left
right
Anglo-Saxon name for the metal; the symbol Au is from the Latin name, aurum, "shining dawn".
silver
gold
Latin: chloros, "greenish-yellow" (element is a pale, yellow-green gas).
magnesium
chlorine
Photoelectron spectrophotometers use high-energy radiation ____________ to eject electrons from an atom.
visual light
gamma waves and radio waves
infrared waves and microwaves
X rays and UV waves
