College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Chapter 28, Problem 9P
To determine
The energy required to raise an
He + n = 1 n = 2
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Singly-ionized helium (He+) is a hydrogen-like atom. Determine the energy in eV required to raise a He+ electron from the n = 2 to the n = 3 energy level.
A hypothetical atom has only two atomic energy levels, separated by 3.2 eV. Suppose that at a certain altitude in the atmosphere of a star there are 6.1 * 1013/cm3 of these atoms in the higher-energy state and 2.5 * 1015/cm3 in the lower-energy state. What is the temperature of the star’s atmosphere at that altitude?
Singly ionized helium (He+) is a hydrogen - like atom. Determine the energy in eV required to raise a He+ electron from the n = 1 to the n = 2 energy level.
Chapter 28 Solutions
College Physics
Ch. 28.3 - Prob. 28.1QQCh. 28.4 - Prob. 28.2QQCh. 28.5 - Prob. 28.3QQCh. 28 - Prob. 1CQCh. 28 - Prob. 2CQCh. 28 - Prob. 3CQCh. 28 - Prob. 4CQCh. 28 - Prob. 5CQCh. 28 - Prob. 6CQCh. 28 - Prob. 7CQ
Ch. 28 - Prob. 8CQCh. 28 - Prob. 9CQCh. 28 - Prob. 10CQCh. 28 - Prob. 11CQCh. 28 - Prob. 12CQCh. 28 - Prob. 13CQCh. 28 - Prob. 14CQCh. 28 - Prob. 15CQCh. 28 - Prob. 1PCh. 28 - Prob. 2PCh. 28 - Prob. 3PCh. 28 - Prob. 4PCh. 28 - Prob. 5PCh. 28 - Prob. 6PCh. 28 - Prob. 7PCh. 28 - Prob. 8PCh. 28 - Prob. 9PCh. 28 - Prob. 10PCh. 28 - Prob. 11PCh. 28 - Prob. 12PCh. 28 - Prob. 13PCh. 28 - Prob. 14PCh. 28 - Prob. 15PCh. 28 - Prob. 16PCh. 28 - Prob. 17PCh. 28 - Prob. 18PCh. 28 - Prob. 19PCh. 28 - Prob. 20PCh. 28 - Prob. 21PCh. 28 - Prob. 22PCh. 28 - Prob. 23PCh. 28 - Prob. 24PCh. 28 - Prob. 25PCh. 28 - Prob. 26PCh. 28 - Prob. 27PCh. 28 - Prob. 28PCh. 28 - Prob. 29PCh. 28 - Prob. 30PCh. 28 - Prob. 31PCh. 28 - Prob. 32PCh. 28 - Prob. 33PCh. 28 - Prob. 34PCh. 28 - Prob. 35PCh. 28 - Prob. 36PCh. 28 - Prob. 37PCh. 28 - Prob. 38PCh. 28 - Prob. 39PCh. 28 - Prob. 40PCh. 28 - Prob. 41PCh. 28 - Prob. 42PCh. 28 - Prob. 43PCh. 28 - Prob. 44PCh. 28 - Prob. 45PCh. 28 - Prob. 46APCh. 28 - Prob. 47APCh. 28 - Prob. 48APCh. 28 - Prob. 49APCh. 28 - Prob. 50APCh. 28 - Prob. 51APCh. 28 - Prob. 52APCh. 28 - Prob. 53APCh. 28 - Prob. 54AP
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- What is the minimum energy needed to ionize a hydrogen atom that is in the n = 2 state (in eV)?arrow_forwardA neutral sodium atom has an ionization potential of 5.1 eV. What is the speed of a free electron that has just barely enough kinetic energy to collisionally ionize a sodium atom in its ground state? What is the speed of a free proton with just enough kinetic energy to collisionally ionize this atom?arrow_forwardMystery element X has the electron energy levels shown in the figure below, in which E₁ = -9.1 eV, E₂ = -4.2 eV, and E3 = -2.8 eV. The dashed line is not an energy level, but rather just shows the location of zero energy. n = 00 0 eV n = 3 E 3 n = 2 E 2 n = 1 E₁ (a) How much energy does it take to ionize, or remove, an electron that is in the ground state of this atom? 9.1 eV (b) There is one transition in the emission spectrum that will not be observed in the absorption transition. What is the (positive) energy of this transition? 7 X ev (c) What is the wavelength of the photon emitted in this transition? 1970 x nm (d) Now consider the absorption spectrum. What is the energy of the transition in the absorption spectrum that has the shortest wavelength? HINT: Identify the transitions that occur in the absorption spectrum and then think about how energy and wavelength are related. X ev 4.9 (e) What is the wavelength of the photon that is absorbed in this transition? 2533 x nm (f) What…arrow_forward
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