Question 1

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.

Question 2

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

Question 3

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.

Question 4

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

Question 5

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

Question 6

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

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

Question 8

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

Question 9

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

Question 10

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

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

Question 12

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

Question 13

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

Question 14

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.

Question 15

The beam in a cathode-ray tube is composed of

Accepted Answer

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

Exam 32: The Atom and the Quantum

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

Correct Answer
verified

The beam in a cathode-ray tube is composed of

Correct Answer
verified

Credit for research in our knowledge of atomic spectra includes

Correct Answer
verified

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

Correct Answer
verified

Both electrons and protons have equal-magnitude

Correct Answer
verified

A stable electron orbit cannot exist if its circumference is

Correct Answer
verified

What did Millikan measure in his oil-drop experiment?

Correct Answer
verified

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

Correct Answer
verified

The spectral lines of atomic spectra are

Correct Answer
verified

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

Correct Answer
verified

The Ritz combination principle states that the sum of the

Correct Answer
verified

A new theory conforms to the correspondence principle when it

Correct Answer
verified

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

Correct Answer
verified

The Bohr model of the atom is akin to a

Correct Answer
verified

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

Correct Answer
verified

Exam 32: The Atom and the Quantum

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

Correct AnswerverifiedShow Answer

The beam in a cathode-ray tube is composed of

Correct AnswerverifiedShow Answer

Credit for research in our knowledge of atomic spectra includes

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Both electrons and protons have equal-magnitude

Correct AnswerverifiedShow Answer

A stable electron orbit cannot exist if its circumference is

Correct AnswerverifiedShow Answer

What did Millikan measure in his oil-drop experiment?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The spectral lines of atomic spectra are

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The Ritz combination principle states that the sum of the

Correct AnswerverifiedShow Answer

A new theory conforms to the correspondence principle when it

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The Bohr model of the atom is akin to a

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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