Principles of Instrumental Analysis
Principles of Instrumental Analysis
7th Edition
ISBN: 9781305577213
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cengage Learning
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Chapter 6, Problem 6.9QAP

Cesium is used extensively in photocells and in television cameras because it has the lowest ionization energy of all the stable elements.
(a) What is the maximum kinetic energy of a photoelectron ejected from cesium by 520 nm light? Note that if the wavelength of the light used to irradiate the cesium surface becomes longer than 660 nm, no photoelectrons are emitted.
(b) Use the rest mass of the electron to calculate the velocity of the photoelectron in (a).

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