Question 1

A shell is defined by ________

Accepted Answer

A)  the $\ell$
Quantum number. 
B)  the ml quantum number. 
C)  the ms quantum number. 
D)  the n quantum number. 
E)  both the $\ell$
And ml quantum numbers. 
A)  the $\ell$
Quantum number. 
B)  the ml quantum number. 
C)  the ms quantum number. 
D)  the n quantum number. 
E)  both the $\ell$
And ml quantum numbers.

Question 2

Determine the wavelength of the line in the hydrogen atom spectrum corresponding to the n1 = 3 to n2 = 4 transition.

Accepted Answer

A)  1,094 nm 
B)  1,875 nm 
C)  656 nm 
D)  335 nm 
E)  109 nm 
A)  1,094 nm 
B)  1,875 nm 
C)  656 nm 
D)  335 nm 
E)  109 nm

Question 3

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

Accepted Answer

A)  The principal quantum number, n, identifies the size and energy of an orbital. 
B)  The value of the principal quantum number can be 0 or a positive or negative integer. 
C)  Orbitals with the same value for the principal quantum number are said to be in the same shell. 
D)  Orbitals with larger values of the principal quantum number locate the electron farther from the atomic nucleus. 
E)  Orbitals with smaller values of the principal quantum number describe electrons with a lower energy. 
A)  The principal quantum number, n, identifies the size and energy of an orbital. 
B)  The value of the principal quantum number can be 0 or a positive or negative integer. 
C)  Orbitals with the same value for the principal quantum number are said to be in the same shell. 
D)  Orbitals with larger values of the principal quantum number locate the electron farther from the atomic nucleus. 
E)  Orbitals with smaller values of the principal quantum number describe electrons with a lower energy.

Question 4

A light detector based on the photoelectric effect is made with cesium metal. Cesium metal has a work function of 3.40 *10-19 J. What is the longest wavelength of light that one could expect to detect with this device?

Accepted Answer

Question 5

What is the energy (E, in J) of a photon from a microwave oven with a frequency of
v = 6.0 * 1010 Hz?

Accepted Answer

A)  3.98 *10 10-30 J 
B)  3.98 *10-39 J 
C)  3.98*10-23 J 
D)  3.98 *10-17 J 
E)  3.98 *10-13 J 
A)  3.98 *10 10-30 J 
B)  3.98 *10-39 J 
C)  3.98*10-23 J 
D)  3.98 *10-17 J 
E)  3.98 *10-13 J

Question 6

Two elements that have np3 in their ground-state electron configuration are ________

Accepted Answer

A)  N and As 
B)  Ge and Pb 
C)  B and Al 
D)  Li and Mg 
E)  Ca and Ba 
A)  N and As 
B)  Ge and Pb 
C)  B and Al 
D)  Li and Mg 
E)  Ca and Ba

Question 7

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

Accepted Answer

A)  The principal quantum number, n, identifies the size of an atomic orbital. 
B)  The angular momentum quantum number, $\ell$
, identifies the shape of an atomic orbital. 
C)  The magnetic quantum number, ml, identifies the orientation of the orbital in space. 
D)  The magnetic quantum number can have values that range from - $\ell$
To + $\ell$
In integer steps. 
E)  The principal quantum number alone, n, identifies the energy of an atomic orbital. 
A)  The principal quantum number, n, identifies the size of an atomic orbital. 
B)  The angular momentum quantum number, $\ell$
, identifies the shape of an atomic orbital. 
C)  The magnetic quantum number, ml, identifies the orientation of the orbital in space. 
D)  The magnetic quantum number can have values that range from - $\ell$
To + $\ell$
In integer steps. 
E)  The principal quantum number alone, n, identifies the energy of an atomic orbital.

Question 8

How many orbitals are possible for the n = 2 shell?

Accepted Answer

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

Question 9

Subshells are ________

Accepted Answer

A)  orbitals with the same principal and angular momentum quantum numbers. 
B)  orbitals with the same principal quantum numbers. 
C)  orbitals with the same angular momentum quantum numbers. 
D)  orbitals with the same angular momentum and magnetic quantum numbers. 
E)  orbitals with the same spin quantum number. 
A)  orbitals with the same principal and angular momentum quantum numbers. 
B)  orbitals with the same principal quantum numbers. 
C)  orbitals with the same angular momentum quantum numbers. 
D)  orbitals with the same angular momentum and magnetic quantum numbers. 
E)  orbitals with the same spin quantum number.

Question 10

Which of the following is not an allowed value for the principal quantum number?

Accepted Answer

A)  1 
B)  3 
C)  10 
D)  0 
E)  2 
A)  1 
B)  3 
C)  10 
D)  0 
E)  2

Question 11

Which of the following photons has the lowest frequency?

Accepted Answer

A)  a photon from a Nd:YAG laser with $\lambda$ = 1,064 nm 
B)  a photon from an Ar+ laser with $\lambda$ = 514.5 nm 
C)  a photon from a Kr+ laser with $\lambda$= 647 nm 
D)  a photon from an ArF laser with $\lambda$ = 193 nm 
E)  a photon from a He-Ne laser with $\lambda$ = 633 nm 
A)  a photon from a Nd:YAG laser with $\lambda$ = 1,064 nm 
B)  a photon from an Ar+ laser with $\lambda$ = 514.5 nm 
C)  a photon from a Kr+ laser with $\lambda$= 647 nm 
D)  a photon from an ArF laser with $\lambda$ = 193 nm 
E)  a photon from a He-Ne laser with $\lambda$ = 633 nm

Question 12

Early photoelectric light detectors were based on cesium. Cesium metal has a work function of 3.43 *10-19 J. What is the minimum photon energy needed to eject photoelectrons from a cesium surface?

Accepted Answer

A)  4.33 * 10-17 J 
B)  3.34 *10-18 J 
C)  3.43 *10-20 J 
D)  3.43 *10-19 J 
E)  1.99 *10-21 J 
A)  4.33 * 10-17 J 
B)  3.34 *10-18 J 
C)  3.43 *10-20 J 
D)  3.43 *10-19 J 
E)  1.99 *10-21 J

Question 13

Which sequence does not correctly arrange the elements in order of increasing energy released (electron affinity) upon formation of its monatomic anion?

Accepted Answer

A)  Ne < Li < O < Cl 
B)  Cs < K < Na < Li 
C)  Be < B < O < F 
D)  N < C < O < F 
E)  Mg < Si < S < Ar 
A)  Ne < Li < O < Cl 
B)  Cs < K < Na < Li 
C)  Be < B < O < F 
D)  N < C < O < F 
E)  Mg < Si < S < Ar

Question 14

Which transition in a hydrogen atom requires the largest change in energy?

Accepted Answer

A)  n1 = 2 to n2 = 3 
B)  n1 = 2 to n2 = 4 
C)  n1 = 1 to n2 = 3 
D)  n1 = 1 to n2 = 2 
E)  n1 = 9 to n2 = 10 
A)  n1 = 2 to n2 = 3 
B)  n1 = 2 to n2 = 4 
C)  n1 = 1 to n2 = 3 
D)  n1 = 1 to n2 = 2 
E)  n1 = 9 to n2 = 10

Question 15

Recently, buckyballs (C60) became the largest objects with a measured de Broglie wavelength. If the mass of a C60 molecule is 1.20 *10-24 kg, 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 16

The study of light emitted by the hydrogen atom by Johann Balmer, Johannes Rydberg, Niels Bohr, and others revolutionized physics because it revealed that ________

Accepted Answer

A)  energy is quantized. 
B)  light intensity does not affect the number of atoms excited. 
C)  the emitted light is produced by the electron making a transition between quantized energy levels. 
D)  blackbody radiation is continuous. 
E)  atomic spectra are continuous. 
A)  energy is quantized. 
B)  light intensity does not affect the number of atoms excited. 
C)  the emitted light is produced by the electron making a transition between quantized energy levels. 
D)  blackbody radiation is continuous. 
E)  atomic spectra are continuous.

Question 17

A coordinate system is defined with orthogonal x-, y-, and z-axes. How many of the d orbitals have lobes pointing along one or more of the axes?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  5 
A)  0 
B)  1 
C)  2 
D)  3 
E)  5

Question 18

Fraunhofer lines are due to ________

Accepted Answer

A)  emission of radiation. 
B)  absorption of radiation. 
C)  the photoelectric effect. 
D)  constructive interference. 
E)  destructive interference. 
A)  emission of radiation. 
B)  absorption of radiation. 
C)  the photoelectric effect. 
D)  constructive interference. 
E)  destructive interference.

Question 19

Which subshell only has five orbitals?

Accepted Answer

A)  $\ell$ = 2 
B)  $\ell$ = 1 
C)  $\ell$ = 5 
D)  $\ell$= 3 
E)  $\ell$= 4 
A)  $\ell$ = 2 
B)  $\ell$ = 1 
C)  $\ell$ = 5 
D)  $\ell$= 3 
E)  $\ell$= 4

Question 20

Astronomers have detected hydrogen atoms in interstellar space in the n = 732 energy level. Suppose an atom in this excited state emits a photon and undergoes a transition from n = 732 to n = 721. How much energy does the atom lose as a result of this transition? What is the wavelength of the emitted photon? In which spectral region does this radiation lie?

Accepted Answer

1.25 *10^-²⁵ J of energy was lost.

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

A shell is defined by ________

Determine the wavelength of the line in the hydrogen atom spectrum corresponding to the n1 = 3 to n2 = 4 transition.

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

A light detector based on the photoelectric effect is made with cesium metal. Cesium metal has a work function of 3.40 *10-19 J. What is the longest wavelength of light that one could expect to detect with this device?

What is the energy (E, in J) of a photon from a microwave oven with a frequency of v = 6.0 * 1010 Hz?

Two elements that have np3 in their ground-state electron configuration are ________

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

How many orbitals are possible for the n = 2 shell?

Subshells are ________

Which of the following is not an allowed value for the principal quantum number?

Which of the following photons has the lowest frequency?

Early photoelectric light detectors were based on cesium. Cesium metal has a work function of 3.43 *10-19 J. What is the minimum photon energy needed to eject photoelectrons from a cesium surface?

Which sequence does not correctly arrange the elements in order of increasing energy released (electron affinity) upon formation of its monatomic anion?

Which transition in a hydrogen atom requires the largest change in energy?

Recently, buckyballs (C60) became the largest objects with a measured de Broglie wavelength. If the mass of a C60 molecule is 1.20 *10-24 kg, what will be its de Broglie wavelength if it is moving at a speed of 220 m/sec?

The study of light emitted by the hydrogen atom by Johann Balmer, Johannes Rydberg, Niels Bohr, and others revolutionized physics because it revealed that ________

A coordinate system is defined with orthogonal x-, y-, and z-axes. How many of the d orbitals have lobes pointing along one or more of the axes?

Fraunhofer lines are due to ________

Which subshell only has five orbitals?

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

Determine the wavelength of the line in the hydrogen atom spectrum corresponding to the n₁ = 3 to n₂ = 4 transition.

A light detector based on the photoelectric effect is made with cesium metal. Cesium metal has a work function of 3.40 *10^-¹⁹ J. What is the longest wavelength of light that one could expect to detect with this device?

What is the energy (E, in J) of a photon from a microwave oven with a frequency of v = 6.0 * 10¹⁰ Hz?

Two elements that have np³ in their ground-state electron configuration are ________

Early photoelectric light detectors were based on cesium. Cesium metal has a work function of 3.43 *10^-¹⁹ J. What is the minimum photon energy needed to eject photoelectrons from a cesium surface?

Recently, buckyballs (C₆₀) became the largest objects with a measured de Broglie wavelength. If the mass of a C₆₀ molecule is 1.20 *10^-²⁴ kg, what will be its de Broglie wavelength if it is moving at a speed of 220 m/sec?