Question 1

The thing that "waves" in the Schrödinger equation is a

Accepted Answer

A) particle's position. 
B) particle's momentum. 
C) wave function. 
D) all of the above 
E) none of the above 
A) particle's position. 
B) particle's momentum. 
C) wave function. 
D) all of the above 
E) none of the above

Question 2

The Ritz combination principle states that the sum of the

Accepted Answer

A) frequencies of two lines in a spectrum often equal the frequency of a third line. 
B) energies associated with two lines in a spectrum often equal the energy associated with a third line. 
C) energy transitions of quantum jumps is consistent with the conservation of energy. 
D) all of the above 
E) none of the above 
A) frequencies of two lines in a spectrum often equal the frequency of a third line. 
B) energies associated with two lines in a spectrum often equal the energy associated with a third line. 
C) energy transitions of quantum jumps is consistent with the conservation of energy. 
D) all of the above 
E) none of the above

Question 3

What did Millikan measure in his oil-drop experiment?

Accepted Answer

A) the electric charge of an electron 
B) the mass of an electron 
C) the mass of oil drops 
D) none of the above 
A) the electric charge of an electron 
B) the mass of an electron 
C) the mass of oil drops 
D) none of the above

Question 4

Both electrons and protons have equal-magnitude

Accepted Answer

A) mass. 
B) charge. 
C) energy. 
D) all of the above 
E) none of the above 
A) mass. 
B) charge. 
C) energy. 
D) all of the above 
E) none of the above

Question 5

A new theory conforms to the correspondence principle when it

Accepted Answer

A) corresponds to all theories in nature. 
B) updates the essence of the old theory. 
C) connects two or more theories. 
D) accounts for verified results of the old theory. 
A) corresponds to all theories in nature. 
B) updates the essence of the old theory. 
C) connects two or more theories. 
D) accounts for verified results of the old theory.

Question 6

When an electron de-excites from the third quantum level to the second, and then to the ground state, two photons are emitted. The sum of the emitted frequencies equals the frequency of the single photon that would be emitted if de-excitation were from the third to

Accepted Answer

A) the second level. 
B) the ground state. 
C) any other level. 
D) none of the above 
A) the second level. 
B) the ground state. 
C) any other level. 
D) none of the above

Question 7

The Bohr model of the atom is akin to a

Accepted Answer

A) miniature solar system. 
B) blob of plum pudding, where raisins represent electrons. 
C) central heavy ball with lighter balls connected by springs. 
D) all of the above 
A) miniature solar system. 
B) blob of plum pudding, where raisins represent electrons. 
C) central heavy ball with lighter balls connected by springs. 
D) all of the above

Question 8

The beam in a cathode-ray tube is composed of

Accepted Answer

A) photons. 
B) electrons. 
C) both of these 
D) neither of these 
A) photons. 
B) electrons. 
C) both of these 
D) neither of these

Question 9

Credit for research in our knowledge of atomic spectra includes

Accepted Answer

A) Johann Jacob Balmer. 
B) Johannes Rydberg. 
C) Walter Ritz. 
D) all of the above 
E) none of the above 
A) Johann Jacob Balmer. 
B) Johannes Rydberg. 
C) Walter Ritz. 
D) all of the above 
E) none of the above

Question 10

When Rutherford directed a stream of alpha particles at a gold foil, some particles

Accepted Answer

A) bounced back. 
B) continued through the foil. 
C) deflected at a variety of angles. 
D) all of the above 
E) none of the above 
A) bounced back. 
B) continued through the foil. 
C) deflected at a variety of angles. 
D) all of the above 
E) none of the above

Question 11

An excited atom decays to its ground state and emits a photon of red light. If instead the decay is to an intermediate state, then the light emitted could be

Accepted Answer

A) red. 
B) violet. 
C) blue. 
D) any of these 
E) none of these 
A) red. 
B) violet. 
C) blue. 
D) any of these 
E) none of these

Question 12

A hypothetical atom has four distinct energy states. Assuming all transitions are possible, the number of spectral lines this atom can produce is

Accepted Answer

A) 5. 
B) 6. 
C) 7. 
D) 8. 
E) more than 8. 
A) 5. 
B) 6. 
C) 7. 
D) 8. 
E) more than 8.

Question 13

A stable electron orbit cannot exist if its circumference is

Accepted Answer

A) a single wavelength. 
B) 2 wavelengths. 
C) 2.5 wavelengths. 
D) any of the above 
E) none of the above 
A) a single wavelength. 
B) 2 wavelengths. 
C) 2.5 wavelengths. 
D) any of the above 
E) none of the above

Question 14

Compared with the wavelengths of visible light, the wavelengths of matter waves in atoms are relatively

Accepted Answer

A) long. 
B) short. 
C) neither, for all are the same. 
A) long. 
B) short. 
C) neither, for all are the same.

Question 15

The spectral lines of atomic spectra are

Accepted Answer

A) images of the slit in a spectroscope. 
B) orderly, and even predictable. 
C) as an identity of atoms as fingerprints are of people. 
D) all of the above 
E) none of the above 
A) images of the slit in a spectroscope. 
B) orderly, and even predictable. 
C) as an identity of atoms as fingerprints are of people. 
D) all of the above 
E) none of the above

Exam 32: The Atom and the Quantum

The thing that "waves" in the Schrödinger equation is a

The Ritz combination principle states that the sum of the

What did Millikan measure in his oil-drop experiment?

Both electrons and protons have equal-magnitude

A new theory conforms to the correspondence principle when it

When an electron de-excites from the third quantum level to the second, and then to the ground state, two photons are emitted. The sum of the emitted frequencies equals the frequency of the single photon that would be emitted if de-excitation were from the third to

The Bohr model of the atom is akin to a

The beam in a cathode-ray tube is composed of

Credit for research in our knowledge of atomic spectra includes

When Rutherford directed a stream of alpha particles at a gold foil, some particles

An excited atom decays to its ground state and emits a photon of red light. If instead the decay is to an intermediate state, then the light emitted could be

A hypothetical atom has four distinct energy states. Assuming all transitions are possible, the number of spectral lines this atom can produce is

A stable electron orbit cannot exist if its circumference is

Compared with the wavelengths of visible light, the wavelengths of matter waves in atoms are relatively

The spectral lines of atomic spectra are

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