Universe: Stars And Galaxies
Universe: Stars And Galaxies
6th Edition
ISBN: 9781319115098
Author: Roger Freedman, Robert Geller, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 5, Problem 36Q
To determine

(a)

Spectrum of hydrogen at visible wavelength.

To determine

(b)

The explanation of Bohr’s model for Balmer series.

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a. Calculate the de Broglie wavelength of the electron in the n = 1, 2, and 3 states of the hydrogen atom. Use the information as shown.b. Show numerically that the circumference of the orbit for each of these stationary states is exactly equal to n de Broglie wavelengths.c. Sketch the de Broglie standing wave for the n = 3 orbit.
Select statements that are appropriate for the Bohr model of an atom. Select one or more: a. The angular momentum of the revolving electron in stationary orbits is an integer multiple of the reduced Planck constant b. Electrons form a cloud around a heavy nucleus. c. The electron is able to revolve in certain stable orbits around the nucleus without radiating any energy.
An electron is excited from the ground state of an atom (energy level 1) into a highly excited state (energy level 8).  Which of the following electron behaviors represents the fluorescence effect by the atom?  a. The electron remains at level 8 for a very long time, then transitions up to level 9.  b. The electron transitions directly down from level 8 to level 1.  c. The electron transitions from level 8 to level 1 and then returns quickly to level 8.  d. The electron transitions from level 8 to level 6, then to level 5, then to level 3, then to level 1.
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