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Chapter 9 Quiz

38 Questions  I  By Jlsanko
Chapter 9 Quiz

  
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1.  An s orbital
A.
B.
C.
D.
2.  The quantum-mechanical theory of the atom is 
A.
B.
C.
D.
3.  Which of the following properties is not characteristic of the light waves from a laser? 
A.
B.
C.
D.
4.  An electron can revolve in an orbit around an atomic nucleus without radiating energy provided that the orbit
A.
B.
C.
D.
5.  A phenomenon that cannot be understood with the help of the quantum theory of light is 
A.
B.
C.
D.
6.  An electron in a p state of an atom has an angular momentum quantum number l of 
A.
B.
C.
D.
7.  The photoelectric effect can be understood on the basis of 
A.
B.
C.
D.
8.  Which of teh following types of radiation is not emitted by the electronic structures of atoms? 
A.
B.
C.
D.
9.  WHen light is directed at a metal surface, the energies of the emitted electrons
A.
B.
C.
D.
10.  According to the uncertainity principle, it is impossible to precisely determine at the same time a particle's 
A.
B.
C.
D.
11.  The mass of a photon
A.
B.
C.
D.
12.  A quantum number is not associated with an atomic electron's 
A.
B.
C.
D.
13.  The rate at which an object emits electromagnetic energy does not depend on its
A.
B.
C.
D.
14.  In a vaccum, all photons have the same
A.
B.
C.
D.
15.  De Broglie waves can be regarded as waves of 
A.
B.
C.
D.
16.  According to the theories of modern physics, light
A.
B.
C.
D.
17.  The narrower the wave packet of a particle is
A.
B.
C.
D.
18.  The energy difference between adjacent energy levels in the hydrogen atom
A.
B.
C.
D.
19.  When an atom absorbs a photon of light, which one or more of the following can happen? 
A.
B.
C.
D.
E.
20.  The operation of the laser is based upon 
A.
B.
C.
D.
21.  The electrons in an atom all have the same 
A.
B.
C.
D.
22.  An atom emits a phtoon when one of its orbital electrons
A.
B.
C.
D.
23.  THe emission spectrum produced by the excited atoms of an element contains frequencies that are 
A.
B.
C.
D.
24.  How many quantum numbers are needed to determine the size and shape of an atomic orbital?
A.
B.
C.
D.
25.  In the Bohr model of the atom, the electrons revolve around the nucleus of an atom so as to 
A.
B.
C.
D.
26.  The classical model of the hydrogen atom falls because
A.
B.
C.
D.
27.  Electrons behave like
A.
B.
C.
D.
28.  The description of a moving body in terms of matter waves is legitimate because
A.
B.
C.
D.
29.  The orbital of an atomic electron is 
A.
B.
C.
D.
30.  A neon sign does not produce
A.
B.
C.
D.
31.  The speed of the wave packet that corresponds to a moving particle is 
A.
B.
C.
D.
32.  Most stars are hot objects surrounded by cooler atmosphere. The spectrum of such a star is a
A.
B.
C.
D.
33.  According to the theories of modern physics, 
A.
B.
C.
D.
34.  When the speed of the electrons that strike a metal surface is increased, the result is an increase in
A.
B.
C.
D.
35.  According to the Bohr model of the atom, an electron in the ground state
A.
B.
C.
D.
36.  If Planck's constant were larger than it is, 
A.
B.
C.
D.
37.  According to the exclusion principle, no two electrons in an atom can have the same
A.
B.
C.
D.
38.  A hydrogen atom is said to be in its ground state when its electron 
A.
B.
C.
D.
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