Name: __________________________
Photoelectron Spectroscopy Worksheet
1. PES experiments can use an X-ray wavelength of 0.8721 nm. Calculate the energy of the X-ray photon used
in the PES experiment described. Use the equations given on you AP equation sheet.
2.
The photon in question 1 strikes atoms of an unknown element. The kinetic energy of the ejected
electrons is 2.627 × 10−16 J, what is the ionization energy of the element?
3.
What determines the position and the height (intensity) of each peak in a photoelectron spectrum?
4.
Why is the distance of the energy level from the nucleus important in determining the
corresponding peak position in the photoelectron spectrum?
5.
Based on the information provided below, draw a photoelectron spectrum for argon. Indicate the
relative intensities and positions of all peaks.
1s2
- 309.0
2s2
- 31.5
2p6
- 24.1
3s2
- 2.83
3p6
- 1.52
6.
Is it possible to deduce the electron configuration for an atom from its
photoelectron spectrum? If so, explain how. If not, explain why not.
7.
Identify the element in the photoelectron spectrum shown below and write its
electron configuration.
8.
Identify if either of the following statements is correct. Briefly explain your
reasoning:
2+
is expected to be identical to the
35Cl
is identical to the photoelectron
a)
The photoelectron spectrum of Mg
photoelectron spectrum of Ne.
b)
The photoelectron spectrum of
spectrum of 37Cl.