Electron microscopes operate on the fact that electrons act as waves. A typical electron kinetic energy is 100 keV (1 eV 5 1.602 3 10219 J). What is the wavelength of such an electron? (Ignore relativistic effects.)
Electron microscopes operate on the fact that electrons act as waves. A typical electron kinetic energy is 100 keV (1 eV 5 1.602 3 10219 J). What is the wavelength of such an electron? (Ignore relativistic effects.)
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
Electron microscopes operate on the fact that
electrons act as waves. A typical electron kinetic energy is
100 keV (1 eV 5 1.602 3 10219 J). What is the wavelength of
such an electron? (Ignore relativistic effects.)
Expert Solution
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Step 1
Given:
The mass of electron m =9.11 x 10-31 kg
The charge on the electron, e =1.602 × 10−19 C
plank constant h = 6.626 x 10-34 J.s
Kinetic energy, K.E.= 100 keV= 100 x 103 eV=105 eV
The wavelength, =?
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