Question 1

Calculate the wavelength of light emitted from a hydrogen atom when an electron undergoes an n = 8 to n = 4 transmission.

Accepted Answer

A)  1940 nm 
B)  2620 nm 
C)  1.245 × 103 nm 
D)  3.178 × 103 nm 
E)  714.8 nm 
A)  1940 nm 
B)  2620 nm 
C)  1.245 × 103 nm 
D)  3.178 × 103 nm 
E)  714.8 nm

Question 2

Calculate the frequency of light associated with the transition from n = 2 to n = 3 in the hydrogen atom.

Accepted Answer

A)  2.19 × 1014 s-1 
B)  5.59 × 1014 s-1 
C)  4.57 × 1014 s-1 
D)  1.79 × 1014 s-1 
E)  3.28 × 1014 s-1 
A)  2.19 × 1014 s-1 
B)  5.59 × 1014 s-1 
C)  4.57 × 1014 s-1 
D)  1.79 × 1014 s-1 
E)  3.28 × 1014 s-1

Question 3

Which of the following quantum numbers describes the orientation of an orbital?

Accepted Answer

A)  magnetic quantum number 
B)  principal quantum number 
C)  angular momentum quantum number 
D)  spin quantum number 
E)  Schrödinger quantum number 
A)  magnetic quantum number 
B)  principal quantum number 
C)  angular momentum quantum number 
D)  spin quantum number 
E)  Schrödinger quantum number

Question 4

Only two electrons, with opposing spins, are allowed in each orbital. What is this known as?

Accepted Answer

A)  Pauli exclusion principle 
B)  Hund's rule 
C)  aufbau principle 
D)  Heisenberg uncertainty principle 
A)  Pauli exclusion principle 
B)  Hund's rule 
C)  aufbau principle 
D)  Heisenberg uncertainty principle

Question 5

Determine the velocity of a marble (mass = 8.66 g) with a wavelength of 3.46 × 10-33 m.

Accepted Answer

A)  45.2 m s-1 
B)  11.3 m s-1 
C)  22.1 m s-1 
D)  38.8 m s-1 
E)  52.9 m s-1 
A)  45.2 m s-1 
B)  11.3 m s-1 
C)  22.1 m s-1 
D)  38.8 m s-1 
E)  52.9 m s-1

Question 6

Calculate the frequency of the green light emitted by a hydrogen atom with a wavelength of 486.1 nm.

Accepted Answer

A)  1.462 × 1014 s-1 
B)  6.868 × 1014 s-1 
C)  4.332 × 1014 s-1 
D)  6.172 × 1014 s-1 
E)  1.626 × 1014 s-1 
A)  1.462 × 1014 s-1 
B)  6.868 × 1014 s-1 
C)  4.332 × 1014 s-1 
D)  6.172 × 1014 s-1 
E)  1.626 × 1014 s-1

Question 7

How many sublevels are contained in the second shell (n = 2) of a given atom?

Accepted Answer

A)  1 
B)  2 
C)  9 
D)  4 
E)  3 
A)  1 
B)  2 
C)  9 
D)  4 
E)  3

Question 8

Each of the following sets of quantum numbers is supposed to specify an orbital. Choose the one set of quantum numbers that does not contain an error.

Accepted Answer

A)  n = 2, l = 2, ml = -1 
B)  n = 2, l = 2, ml = 0 
C)  n = 3, l = 2, ml = -3 
D)  n = 4, l = 3, ml = -2 
E)  n = 4, l = 2, ml = +4 
A)  n = 2, l = 2, ml = -1 
B)  n = 2, l = 2, ml = 0 
C)  n = 3, l = 2, ml = -3 
D)  n = 4, l = 3, ml = -2 
E)  n = 4, l = 2, ml = +4

Question 9

How much energy (in kJ) is required to ionize 2.78 moles of hydrogen atoms?

Accepted Answer

A)  2.74 × 103 kJ 
B)  4.72 × 103 kJ 
C)  1.66 × 103 kJ 
D)  3.65 × 103 kJ 
E)  5.89 × 103 kJ 
A)  2.74 × 103 kJ 
B)  4.72 × 103 kJ 
C)  1.66 × 103 kJ 
D)  3.65 × 103 kJ 
E)  5.89 × 103 kJ

Question 10

Choose the paramagnetic species from below.

Accepted Answer

A)  Ti4⁺ 
B)  O 
C)  Ar 
D)  All of the above are paramagnetic. 
E)  None of the above is paramagnetic. 
A)  Ti4⁺ 
B)  O 
C)  Ar 
D)  All of the above are paramagnetic. 
E)  None of the above is paramagnetic.

Calculate the wavelength of light emitted from a hydrogen atom when an electron undergoes an n = 8 to n = 4 transmission.

Calculate the frequency of light associated with the transition from n = 2 to n = 3 in the hydrogen atom.

Which of the following quantum numbers describes the orientation of an orbital?

Only two electrons, with opposing spins, are allowed in each orbital. What is this known as?

Determine the velocity of a marble (mass = 8.66 g) with a wavelength of 3.46 × 10^-33 m.

Calculate the frequency of the green light emitted by a hydrogen atom with a wavelength of 486.1 nm.

How many sublevels are contained in the second shell (n = 2) of a given atom?

Each of the following sets of quantum numbers is supposed to specify an orbital. Choose the one set of quantum numbers that does not contain an error.

How much energy (in kJ) is required to ionize 2.78 moles of hydrogen atoms?

Choose the paramagnetic species from below.

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry Ii: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Exam 7: The Quantum-Mechanical Model of the Atom

Calculate the wavelength of light emitted from a hydrogen atom when an electron undergoes an n = 8 to n = 4 transmission.

Calculate the frequency of light associated with the transition from n = 2 to n = 3 in the hydrogen atom.

Which of the following quantum numbers describes the orientation of an orbital?

Only two electrons, with opposing spins, are allowed in each orbital. What is this known as?

Determine the velocity of a marble (mass = 8.66 g) with a wavelength of 3.46 × 10-33 m.

Calculate the frequency of the green light emitted by a hydrogen atom with a wavelength of 486.1 nm.

How many sublevels are contained in the second shell (n = 2) of a given atom?

Each of the following sets of quantum numbers is supposed to specify an orbital. Choose the one set of quantum numbers that does not contain an error.

How much energy (in kJ) is required to ionize 2.78 moles of hydrogen atoms?

Choose the paramagnetic species from below.

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry Ii: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Determine the velocity of a marble (mass = 8.66 g) with a wavelength of 3.46 × 10^-33 m.