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.)
General Chemistry - Standalone book (MindTap Course List)
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
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Chapter7: Quantum Theory Of The Atom
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Problem 7.102QP: The photoelectric work function of potassium is 2.29 eV. A photon of energy greater than this ejects...
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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
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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