Question 1

Which of the following represents an s orbital?

Accepted Answer

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

Question 2

The mathematical description of an electron as a wave was developed by ________

Accepted Answer

A)  Bohr. 
B)  Heisenberg. 
C)  Einstein. 
D)  De Broglie. 
E)  Schrödinger. 
A)  Bohr. 
B)  Heisenberg. 
C)  Einstein. 
D)  De Broglie. 
E)  Schrödinger. E

Question 3

What is the photon energy of the yellow-orange light ($\lambda$= 589 nm) produced by sodium vapor streetlights?

Accepted Answer

A)  3.37 *10-19 J 
B)  6.63 *10-18 J 
C)  2.99*10-20 J 
D)  1.45 *10-17 J 
E)  7.45 * 10-16 J 
A)  3.37 *10-19 J 
B)  6.63 *10-18 J 
C)  2.99*10-20 J 
D)  1.45 *10-17 J 
E)  7.45 * 10-16 J A

Question 4

A certain shell is known to have a total of 16 orbitals. Which shell is it?

Accepted Answer

A)  n = 4 
B)  n = 16 
C)  n = 8 
D)  n = 2 
A)  n = 4 
B)  n = 16 
C)  n = 8 
D)  n = 2

Question 5

When the principle quantum number = 3, what values are possible for the other quantum numbers $$\ell$$ 
and m $\ell$ 
?

Accepted Answer

@#IMG-DLM& can equal 0, 1, and 2.
For @#IMG-DLM& =

Question 6

The electron configuration of a manganese ion (Z = 25) is [Ar]3d 3. What is the charge on this ion?

Accepted Answer

A)  +7 
B)  +5 
C)  +4 
D)  +3 
E)  +2 
A)  +7 
B)  +5 
C)  +4 
D)  +3 
E)  +2

Question 7

Which of the following types of electromagnetic radiation has the shortest wavelength?

Accepted Answer

A)  gamma rays 
B)  X-rays 
C)  radio waves 
D)  infrared 
E)  visible 
A)  gamma rays 
B)  X-rays 
C)  radio waves 
D)  infrared 
E)  visible

Question 8

A coordinate system is defined with orthogonal x-, y-, and z-axes. Which d orbital has four lobes in the x-y plane but is not aligned along the x- or y-axis?

Accepted Answer

A)  dxy 
B)  dyz 
C)  dxz 
D)  $d _ { x ^ { 2 } - y ^ { 2 } }$ 
E)  $d _ { z ^ { 2 } }$ 
A)  dxy 
B)  dyz 
C)  dxz 
D)  $d _ { x ^ { 2 } - y ^ { 2 } }$ 
E)  $d _ { z ^ { 2 } }$

Question 9

Which of the following objects, all moving at the same speed, will have the largest de Broglie wavelength?

Accepted Answer

A)  a proton 
B)  an electron 
C)  a bowling ball 
D)  a neon atom 
E)  a neutron 
A)  a proton 
B)  an electron 
C)  a bowling ball 
D)  a neon atom 
E)  a neutron

Question 10

In quantum mechanics, an atomic orbital ________

Accepted Answer

A)  provides the position of an electron at any instant of time in the space around an atomic nucleus. 
B)  locates all the electrons in an atom. 
C)  is identical to the orbits Bohr used in his analysis of the hydrogen atom. 
D)  identifies the most probable position of an atomic nucleus. 
E)  provides the probability of finding an electron at any point in the space around an atomic nucleus. 
A)  provides the position of an electron at any instant of time in the space around an atomic nucleus. 
B)  locates all the electrons in an atom. 
C)  is identical to the orbits Bohr used in his analysis of the hydrogen atom. 
D)  identifies the most probable position of an atomic nucleus. 
E)  provides the probability of finding an electron at any point in the space around an atomic nucleus.

Question 11

The Fraunhofer lines are evidence that ________

Accepted Answer

A)  atoms contain nuclei. 
B)  atoms contain electrons. 
C)  waves interfere constructively. 
D)  elements absorb light. 
E)  elements emit light. 
A)  atoms contain nuclei. 
B)  atoms contain electrons. 
C)  waves interfere constructively. 
D)  elements absorb light. 
E)  elements emit light.

Question 12

Arrange the following elements in order of increasing electron affinity: Li, O, Ne, Cl.

Accepted Answer

The answer of Arrange the following elements in order of...

Question 13

Which of the following types of electromagnetic radiation has the longest wavelength?

Accepted Answer

A)  gamma rays 
B)  X-rays 
C)  radio waves 
D)  infrared 
E)  visible 
A)  gamma rays 
B)  X-rays 
C)  radio waves 
D)  infrared 
E)  visible

Question 14

Atomic spectra are due to the changes in the energy of ________

Accepted Answer

A)  protons. 
B)  neutrons. 
C)  nuclei. 
D)  electrons. 
E)  electromagnetic radiation. 
A)  protons. 
B)  neutrons. 
C)  nuclei. 
D)  electrons. 
E)  electromagnetic radiation.

Question 15

Compared with the atomic radius of oxygen (Z = 8), the atomic radius of sulfur (Z = 16) is ________

Accepted Answer

A)  larger because the n quantum number increases. 
B)  smaller because the atomic number (nuclear charge) increases. 
C)  smaller because the n quantum number increases. 
D)  larger because the $\ell$
Quantum number increases. 
E)  about the same because in both cases, the nuclear charge equals the number of electrons. 
A)  larger because the n quantum number increases. 
B)  smaller because the atomic number (nuclear charge) increases. 
C)  smaller because the n quantum number increases. 
D)  larger because the $\ell$
Quantum number increases. 
E)  about the same because in both cases, the nuclear charge equals the number of electrons.

Question 16

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

Accepted Answer

A)  a radio station with $\lambda$ = 106.7 MHz 
B)  a dentist's X-ray source with $\lambda$ = 100 pm 
C)  the laser in a CD player with $\lambda$= 650 nm 
D)  a microwave oven with v= 6.0 * 1010 Hz 
E)  your cell phone with v = 1.750 GHz 
A)  a radio station with $\lambda$ = 106.7 MHz 
B)  a dentist's X-ray source with $\lambda$ = 100 pm 
C)  the laser in a CD player with $\lambda$= 650 nm 
D)  a microwave oven with v= 6.0 * 1010 Hz 
E)  your cell phone with v = 1.750 GHz

Question 17

What wavelength of light is required to cause the ejection of photoelectrons with kinetic energies of 5.0 *10-20 J from a calcium surface (  = 4.60 * 10-19 J)?

Accepted Answer

A)  485 nm 
B)  390 nm 
C)  308 nm 
D)  632 nm 
E)  480 nm 
A)  485 nm 
B)  390 nm 
C)  308 nm 
D)  632 nm 
E)  480 nm

Question 18

How many electrons can be in the n = 3 shell of an atom? (Include all orbitals that have n = 3.)

Accepted Answer

The answer of How many electrons can be in the...

Question 19

What color will a red object appear when it is seen through a filter with the absorption spectrum shown below?

Accepted Answer

A)  blue 
B)  yellow 
C)  red 
D)  black 
E)  white 
A)  blue 
B)  yellow 
C)  red 
D)  black 
E)  white

Question 20

Which of the following atoms or ions has a single unpaired electron?

Accepted Answer

A)  He 
B)  Sr 
C)  Na+ 
D)  Al 
E)  Be 
A)  He 
B)  Sr 
C)  Na+ 
D)  Al 
E)  Be

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

Which of the following represents an s orbital?

The mathematical description of an electron as a wave was developed by ________

What is the photon energy of the yellow-orange light ( λ\lambdaλ = 589 nm) produced by sodium vapor streetlights?

A certain shell is known to have a total of 16 orbitals. Which shell is it?

When the principle quantum number = 3, what values are possible for the other quantum numbers ℓ\ellℓ and m ℓ\ellℓ ?

The electron configuration of a manganese ion (Z = 25) is [Ar]3d 3. What is the charge on this ion?

Which of the following types of electromagnetic radiation has the shortest wavelength?

A coordinate system is defined with orthogonal x-, y-, and z-axes. Which d orbital has four lobes in the x-y plane but is not aligned along the x- or y-axis?

Which of the following objects, all moving at the same speed, will have the largest de Broglie wavelength?

In quantum mechanics, an atomic orbital ________

The Fraunhofer lines are evidence that ________

Arrange the following elements in order of increasing electron affinity: Li, O, Ne, Cl.

Which of the following types of electromagnetic radiation has the longest wavelength?

Atomic spectra are due to the changes in the energy of ________

Compared with the atomic radius of oxygen (Z = 8), the atomic radius of sulfur (Z = 16) is ________

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

What wavelength of light is required to cause the ejection of photoelectrons with kinetic energies of 5.0 *10-20 J from a calcium surface ( = 4.60 * 10-19 J)?

How many electrons can be in the n = 3 shell of an atom? (Include all orbitals that have n = 3.)

What color will a red object appear when it is seen through a filter with the absorption spectrum shown below?

Which of the following atoms or ions has a single unpaired electron?

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: Structures and Applications

Organic Chemistry: Fuels, Pharmaceuticals, Materials, and Life

Chemical Kinetics: Reactions in the Air We Breathe

Chemical Equilibrium: How Much Product Does a Reaction Really Make

Acid-Base and Solubility Equilibria: Reactions in Soil and Water

Metal Ions: Colorful and Essential

Thermodynamics: Spontaneous and Nonspontaneous Reactions and Processes

Electrochemistry: the Quest for Clean Energy

Biochemistry: the Compounds of Life

Nuclear Chemistry: Applications to Energy and Medicine

Life and the Periodic Table

Filters

What is the photon energy of the yellow-orange light ( $\lambda$ = 589 nm) produced by sodium vapor streetlights?

When the principle quantum number = 3, what values are possible for the other quantum numbers $\ell$ and m $\ell$ ?

The electron configuration of a manganese ion (Z = 25) is [Ar]3d ³. What is the charge on this ion?

What wavelength of light is required to cause the ejection of photoelectrons with kinetic energies of 5.0 10^-²⁰ J from a calcium surface ( = 4.60 10^-¹⁹ J)?