Electron microscopes operate on the fact that electrons act as waves. A typical electron kinetic energy is 100. keV (1 eV = 1.602 x 10-19 J). What is the wavelength of such an electron?

Chemistry: An Atoms First Approach
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ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
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Chapter2: Atomic Structure And Periodicity
Section: Chapter Questions
Problem 96E: In the ground state of element 115, Uup, a. how many electrons have n = 5 as one of their quantum...
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Electron microscopes operate on the fact that electrons act as waves. A typical electron kinetic energy is 100. keV (1 eV = 1.602 x 10-19 J). What is the wavelength of such an electron? 

Expert Solution
Step 1

Applying de-Brogalie equation

∆E= hc/lemda 

   = 1242 /lemda 

When energy is in the eV .

 

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