of such an experiment are shown below in Table 1. The electron binding energies (a.k.a. work functions) of four metals are provided in Table 2. One of the metals listed in Table 2 is the unknown metal that generated the experimental results shown in Table 1. Which of the four metals listed is most likely to be the unknown metal? Select your answer from the choices listed below Table 2. What is the process to find out which element out of those listed in table 2, is most likely to be the unknown metal?

Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter21: Surface Characterization By Spectroscopy And Microscopy
Section: Chapter Questions
Problem 21.4QAP
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One way to identify an unknown metal might be through a series of photoelectric effect experiments where the unknown metal sample is bombarded with electromagnetic radiation of various wavelengths. The results of such an experiment are shown below in Table 1. The electron binding energies (a.k.a. work functions) of four metals are provided in Table 2. One of the metals listed in Table 2 is the unknown metal that generated the experimental results shown in Table 1. Which of the four metals listed is most likely to be the unknown metal? Select your answer from the choices listed below Table 2. What is the process to find out which element out of those listed in table 2, is most likely to be the unknown metal?
Table 1. Photoelectric Effect Experimental Results
Laser Wavelength
325 nm
450 nm
300 nm
525 nm
425 nm
Metal
Lithium
Osmium
Uranium
Photoelectric Effect Observed?
Strontium
Yes
Table 2. Select Metals and Their Binding Energies
Yes
Yes
No
Yes
Electron Binding Energy (J)
4.646322e-19
9.5009274e-19
6.0322077e-19
4.405995e-19
Transcribed Image Text:Table 1. Photoelectric Effect Experimental Results Laser Wavelength 325 nm 450 nm 300 nm 525 nm 425 nm Metal Lithium Osmium Uranium Photoelectric Effect Observed? Strontium Yes Table 2. Select Metals and Their Binding Energies Yes Yes No Yes Electron Binding Energy (J) 4.646322e-19 9.5009274e-19 6.0322077e-19 4.405995e-19
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Electron Binding energy is defined as the amount of energy required to remove an electron from an atom.

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