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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Textbook Question
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
(b) Use the rest mass of the electron to calculate the velocity of the photoelectron in (a).
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Chapter 6 Solutions
Principles of Instrumental Analysis
Ch. 6 - Prob. 6.1QAPCh. 6 - Calculate the frequency in hertz, the energy in...Ch. 6 - Calculate the frequency in hertz, the wavelength...Ch. 6 - Prob. 6.4QAPCh. 6 - Prob. 6.5QAPCh. 6 - Prob. 6.6QAPCh. 6 - What is the wavelength of a photon that has three...Ch. 6 - The silver bromide bond energy is approximately...Ch. 6 - Cesium is used extensively in photocells and in...Ch. 6 - Prob. 6.10QAP
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- Does the information on alkali metals in Table 2-8 of the text confirm the general periodic trends in ionization energy and atomic radius? Explain.arrow_forwardPalladium, with an electron configuration of [Kr] 4d10, is an exception to the aufbau principle. Write the electron configuration of the 2+ cation of palladium. Does the fact that palladium is an exception influence the electron configuration of Pd2+?arrow_forwardThe electron affinity of the lutetium atom (element 71) was measured using the technique of photoelectron spectroscopy with an infrared laser (the essay on p. 310 describes this instrumental method, using X rays). In this experiment, a beam of lutetium negative ions, Lu, was prepared and irradiated with a laser beam having a wavelength at 1064 nm. The energy supplied by a photon in this laser beam removes an electron from a negative ion, leaving the neutral atom. The energy needed to remove the electron from the negative ion to give the neutral atom (both in their ground states) is the electron affinity of lutetium. Any excess energy of the photon shows up as kinetic energy of the emitted electron. If the emitted electron in this experiment has a kinetic energy of 0.825 eV, what is the electron affinity of lutetium?arrow_forward
- A nonmetallic element, R, burns brightly in air to give the oxide R4O10. If R is in Period 3, what is the ground-state valence-shell configuration of the atom?arrow_forwardWhich elements on the periodic table tend to have the lowest first ionisation energy? What is the implication of this?arrow_forward7.119 The first four ionization energies of an element areapproximately 738, 1450, 7.7 × 103 , and 1.1 × 104kJ/mol.To which periodic group does this element belong?Explain your answer.arrow_forward
- 7.89 Which of the following properties show a clear periodicvariation: (a) first ionization energy, (b) molar mass ofthe elements, (c) number of isotopes of an element,(d) atomic radius?arrow_forwardWhat is the kinetic energy of the emitted electrons when cesium is exposed to UV rays of frequency 1.90×1015Hz? Express your answer in joules to three significant figures.arrow_forwardExplain which has the higher ionization energy: O or Ne? Identify the subshell with the following quantum numbers: n = 4, l = 3arrow_forward
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