Question 1

Which statement about the quantum numbers that identify an atomic orbital is not correct?

Accepted Answer

A) The magnetic quantum number, ml, identifies the orientation of the orbital in space. 
B) The magnetic quantum number can have values that range from   F1F1F1S1F1F1F10to   F1F1F1S1F1F1F10in integer steps. 
C) An s orbital of any given shell has only one possible ml value. 
D) For p orbitals of any given shell, there are five possible ml values. 
E) Statements A-D are all correct. 
A) The magnetic quantum number, ml, identifies the orientation of the orbital in space. 
B) The magnetic quantum number can have values that range from   F1F1F1S1F1F1F10to   F1F1F1S1F1F1F10in integer steps. 
C) An s orbital of any given shell has only one possible ml value. 
D) For p orbitals of any given shell, there are five possible ml values. 
E) Statements A-D are all correct.

Question 2

Which statement A-D about the wave function for a single electron is not correct?

Accepted Answer

A) A French graduate student named Louis de Broglie first had the idea that an electron should be described as a wave. 
B) Since F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 c, an expression for the wavelength of an electron can be found by combining Einstein's equation that relates mass and energy (   ) with his equation that gives the energy of a photon in terms of its frequency (   ). 
C) The square of the wave function's amplitude at a particular point in space gives the probability density of finding the electron at that point. 
D) Wave functions can have nodes, which are points where the amplitude is zero. 
E) Statements A-D are all correct. 
A) A French graduate student named Louis de Broglie first had the idea that an electron should be described as a wave. 
B) Since F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 c, an expression for the wavelength of an electron can be found by combining Einstein's equation that relates mass and energy (   ) with his equation that gives the energy of a photon in terms of its frequency (   ). 
C) The square of the wave function's amplitude at a particular point in space gives the probability density of finding the electron at that point. 
D) Wave functions can have nodes, which are points where the amplitude is zero. 
E) Statements A-D are all correct.

Question 3

A shell is defined by ________

Accepted Answer

A) the   quantum number. 
B) the ml quantum number. 
C) the ms quantum number. 
D) the n quantum number. 
E) both the   and ml quantum numbers. 
A) the   quantum number. 
B) the ml quantum number. 
C) the ms quantum number. 
D) the n quantum number. 
E) both the   and ml quantum numbers.

Question 4

Which of the following electrons will have the smallest de Broglie wavelength?

Accepted Answer

A) an electron moving 220 m/sec 
B) an electron moving 20 mi/hr 
C) an electron moving 75 km/hr 
D) an electron moving at 25% the speed of light 
E) an electron at rest with no velocity 
A) an electron moving 220 m/sec 
B) an electron moving 20 mi/hr 
C) an electron moving 75 km/hr 
D) an electron moving at 25% the speed of light 
E) an electron at rest with no velocity

Question 5

Determine the wavelength of the line in the hydrogen atom spectrum corresponding to the n1 F1F1F1S1F1F1F10 2 to n2 F1F1F1S1F1F1F10 6 transition.

Accepted Answer

A) 1,275 nm 
B) 1,034 nm 
C) 595 nm 
D) 410 nm 
E) 225 nm 
A) 1,275 nm 
B) 1,034 nm 
C) 595 nm 
D) 410 nm 
E) 225 nm

Question 6

Recently, buckyballs (C60) became the largest objects with a measured de Broglie wavelength. If the mass of a C60 molecule is 1.20   F1F1F1S1F1F1F10kg, what will be its de Broglie wavelength if it is moving at a speed of 220 m/sec?

Accepted Answer

A) 2.52 pm 
B) 2.52 fm 
C) 2.52 m 
D) 1.20 pm 
E) 5.22 m 
A) 2.52 pm 
B) 2.52 fm 
C) 2.52 m 
D) 1.20 pm 
E) 5.22 m

Question 7

The studies of light emitted by hot objects (Max Planck) and the photoelectric effect (Albert Einstein) revolutionized physics because they revealed ________

Accepted Answer

A) that energy is quantized. 
B) that light intensity does not affect the number of electrons ejected from a metal. 
C) that atomic spectra are due to the quantized transitions of electrons. 
D) that blackbody radiation is continuous. 
E) that atomic spectra are continuous. 
A) that energy is quantized. 
B) that light intensity does not affect the number of electrons ejected from a metal. 
C) that atomic spectra are due to the quantized transitions of electrons. 
D) that blackbody radiation is continuous. 
E) that atomic spectra are continuous.

Question 8

A proton in a cyclotron has a velocity of 2   F1F1F1S1F1F1F10m/s, which is nearly the speed of light. The uncertainty in the velocity is 1%. What is the minimum uncertainty in the position of the proton in meters? The proton mass is 2   F1F1F1S1F1F1F10kg.

Accepted Answer

A) 3   F1F1F1S1F1F1F10m 
B) 1   F1F1F1S1F1F1F10m 
C) 1   F1F1F1S1F1F1F10m 
D) 3   F1F1F1S1F1F1F10m 
E) 1   F1F1F1S1F1F1F10m 
A) 3   F1F1F1S1F1F1F10m 
B) 1   F1F1F1S1F1F1F10m 
C) 1   F1F1F1S1F1F1F10m 
D) 3   F1F1F1S1F1F1F10m 
E) 1   F1F1F1S1F1F1F10m

Question 9

Which of the following is quantized?

Accepted Answer

A) the trajectory of a baseball hit from home plate 
B) the speed of a Formula 1 race car 
C) the diameter of a redwood tree 
D) the number of marbles in a bag 
E) one's age 
A) the trajectory of a baseball hit from home plate 
B) the speed of a Formula 1 race car 
C) the diameter of a redwood tree 
D) the number of marbles in a bag 
E) one's age

Question 10

In comparing the dark Fraunhofer lines with light emitted by elements in a flame, Bunsen and Kirchhoff demonstrated that ________

Accepted Answer

A) atoms emit and absorb electromagnetic radiation at characteristic wavelengths. 
B) the solar spectrum has dark lines. 
C) helium may be found in minerals that contain uranium. 
D) electrons are responsible for the absorption and emission of electromagnetic radiation. 
E) the solar spectrum has bright lines. 
A) atoms emit and absorb electromagnetic radiation at characteristic wavelengths. 
B) the solar spectrum has dark lines. 
C) helium may be found in minerals that contain uranium. 
D) electrons are responsible for the absorption and emission of electromagnetic radiation. 
E) the solar spectrum has bright lines.

Question 11

Which of the following orbitals is the highest in energy (assuming they are all in the same shell)?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 12

Which of the following elements has the ground-state electron configuration 1s22s22p63s23p2?

Accepted Answer

A) Al 
B) Si 
C) P 
D) S 
E) Cl 
A) Al 
B) Si 
C) P 
D) S 
E) Cl

Question 13

What is the ground state electron configuration for fluorine?

Accepted Answer

A) 1s22s22p5 
B) 1s22s22p63s23p5 
C) [He]2s22p6 
D) [Ne]3s23p5 
E) 1s22s22p4 
A) 1s22s22p5 
B) 1s22s22p63s23p5 
C) [He]2s22p6 
D) [Ne]3s23p5 
E) 1s22s22p4

Question 14

Indicate which of the following sources produces the lowest energy photons.

Accepted Answer

A) a radio station with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 106.7 MHz 
B) a dentist's X-ray source with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 100 pm 
C) the laser in a CD player with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 650 nm 
D) a microwave oven with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 6.0   F1F1F1S1F1F1F10Hz 
E) your cell phone with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 1.750 GHz 
A) a radio station with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 106.7 MHz 
B) a dentist's X-ray source with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 100 pm 
C) the laser in a CD player with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 650 nm 
D) a microwave oven with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 6.0   F1F1F1S1F1F1F10Hz 
E) your cell phone with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 1.750 GHz

Question 15

The emission spectra of Na and NaF1F1F1S1F1F1F10 are different because ________

Accepted Answer

A) NaF1F1F1S1F1F1F10 has fewer electrons. 
B) Na has fewer electrons. 
C) NaF1F1F1S1F1F1F10 has more protons. 
D) Na has fewer neutrons. 
E) Na has more protons. 
A) NaF1F1F1S1F1F1F10 has fewer electrons. 
B) Na has fewer electrons. 
C) NaF1F1F1S1F1F1F10 has more protons. 
D) Na has fewer neutrons. 
E) Na has more protons.

Question 16

Which of the following photons has the highest energy?

Accepted Answer

A) a photon from a lightbulb with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 500 nm 
B) a photon from a particle accelerator with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 10 nm 
C) a photon emitted from a nuclear reaction with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 425 nm 
D) a photon from an N laser with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 337 nm 
E) a photon from a KrF eximer laser with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 248 nm 
A) a photon from a lightbulb with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 500 nm 
B) a photon from a particle accelerator with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 10 nm 
C) a photon emitted from a nuclear reaction with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 425 nm 
D) a photon from an N laser with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 337 nm 
E) a photon from a KrF eximer laser with F1F1F1S1F1F1F10 F1F1F1S1F1F1F10 248 nm

Question 17

Which subshell only has five orbitals?

Accepted Answer

A)    2 
B)    1 
C)    5 
D)    3 
E)    4 
A)    2 
B)    1 
C)    5 
D)    3 
E)    4

Question 18

Identify which element, potassium or bromine, has the larger electron affinity and explain why.

Accepted Answer

Bromine has the larger electron affinity

Question 19

Which of the following elements has the ground-state electron configuration 1s22s22p3?

Accepted Answer

A) B 
B) C 
C) N 
D) O 
E) F 
A) B 
B) C 
C) N 
D) O 
E) F

Question 20

Which arrangement is not in the correct order of decreasing first ionization energy?

Accepted Answer

A) B   F1F1F1S1F1F1F10Al   F1F1F1S1F1F1F10In 
B) As   F1F1F1S1F1F1F10P   F1F1F1S1F1F1F10N 
C) Cl   F1F1F1S1F1F1F10Si   F1F1F1S1F1F1F10Na 
D) Li   F1F1F1S1F1F1F10K   F1F1F1S1F1F1F10Cs 
E) Br   F1F1F1S1F1F1F10As   F1F1F1S1F1F1F10Ga 
A) B   F1F1F1S1F1F1F10Al   F1F1F1S1F1F1F10In 
B) As   F1F1F1S1F1F1F10P   F1F1F1S1F1F1F10N 
C) Cl   F1F1F1S1F1F1F10Si   F1F1F1S1F1F1F10Na 
D) Li   F1F1F1S1F1F1F10K   F1F1F1S1F1F1F10Cs 
E) Br   F1F1F1S1F1F1F10As   F1F1F1S1F1F1F10Ga

Exam 7: A Quantum Model of Atoms: Waves and Particles

Which statement about the quantum numbers that identify an atomic orbital is not correct?

Which statement A-D about the wave function for a single electron is not correct?

A shell is defined by ________

Which of the following electrons will have the smallest de Broglie wavelength?

Determine the wavelength of the line in the hydrogen atom spectrum corresponding to the n1  2 to n2  6 transition.

Recently, buckyballs (C60) became the largest objects with a measured de Broglie wavelength. If the mass of a C60 molecule is 1.20 kg, what will be its de Broglie wavelength if it is moving at a speed of 220 m/sec?

The studies of light emitted by hot objects (Max Planck) and the photoelectric effect (Albert Einstein) revolutionized physics because they revealed ________

A proton in a cyclotron has a velocity of 2 m/s, which is nearly the speed of light. The uncertainty in the velocity is 1%. What is the minimum uncertainty in the position of the proton in meters? The proton mass is 2 kg.

Which of the following is quantized?

In comparing the dark Fraunhofer lines with light emitted by elements in a flame, Bunsen and Kirchhoff demonstrated that ________

Which of the following orbitals is the highest in energy (assuming they are all in the same shell)?

Which of the following elements has the ground-state electron configuration 1s22s22p63s23p2?

What is the ground state electron configuration for fluorine?

Indicate which of the following sources produces the lowest energy photons.

The emission spectra of Na and Na are different because ________

Which of the following photons has the highest energy?

Which subshell only has five orbitals?

Identify which element, potassium or bromine, has the larger electron affinity and explain why.

Which of the following elements has the ground-state electron configuration 1s22s22p3?

Which arrangement is not in the correct order of decreasing first ionization energy?

Matter and Energy: The Origin of the Universe

Atoms, Ions, and Molecules: Matter Starts Here

Stoichiometry: Mass, Formulas, and Reactions

Solution Chemistry: The Hydrosphere

Thermochemistry: Energy Changes in Reactions

Properties of Gases: The Air We Breathe

Chemical Bonds: What Makes a Gas a Greenhouse Gas

Molecular Geometry: Shape Determines Function

Intermolecular Forces: The Uniqueness of Water

Solutions: Properties and Behavior

Solids: Crystals, Alloys, and Polymers

Chemical Kinetics: Reactions in the Atmosphere

Chemical Equilibrium: How Much Product Does a Reaction Really Make

Acidbase Equilibria: Proton Transfer in Biological Systems

Additional Aqueous Equilibria: Chemistry and the Oceans

Thermodynamics: Spontaneous and Nonspontaneous Reactions and Processes

Electrochemistry: The Quest for Clean Energy

Nuclear Chemistry: Applications to Energy and Medicine

Organic and Biological Molecules: the Compounds of Life

The Main Group Elements: Life and the Periodic Table

Transition Metals: Biological and Medical Applications

Filters

Determine the wavelength of the line in the hydrogen atom spectrum corresponding to the n₁  2 to n₂  6 transition.

Recently, buckyballs (C₆₀) became the largest objects with a measured de Broglie wavelength. If the mass of a C₆₀ molecule is 1.20 kg, what will be its de Broglie wavelength if it is moving at a speed of 220 m/sec?

Which of the following elements has the ground-state electron configuration 1s²2s²2p⁶3s²3p²?

The emission spectra of Na and Na^ are different because ________

Which of the following elements has the ground-state electron configuration 1s²2s²2p³?