Chapter 9 Quiz

38 Questions  I  By Jlsanko

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