Question 1

What are the possible values of n and ml for an electron in a 3d orbital?

Accepted Answer

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

Question 2

Identify the set of four quantum numbers that could represent the electron lost to form the K ION from the K atom.

Accepted Answer

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

Question 3

When waves of equal amplitude from two sources are out of phase when they interact, it is called ________.

Accepted Answer

A)  destructive interference 
B)  diffraction 
C)  constructive interference 
D)  effusion 
E)  amplitude 
A)  destructive interference 
B)  diffraction 
C)  constructive interference 
D)  effusion 
E)  amplitude

Question 4

Give the value of l for a 3p sublevel.

Accepted Answer

A)  1 
B)  0 
C)  -1 
D)  2 
E)  -2 
A)  1 
B)  0 
C)  -1 
D)  2 
E)  -2

Question 5

How many photons are contained in a burst of yellow light (589 nm) from a sodium lamp that contains 609 kJ of energy?

Accepted Answer

A)  3.37 × 1019 photons 
B)  3.06 × 1030 photons 
C)  1.80 × 1024 photons 
D)  4.03 × 1028 photons 
E)  2.48 × 1025 photons 
A)  3.37 × 1019 photons 
B)  3.06 × 1030 photons 
C)  1.80 × 1024 photons 
D)  4.03 × 1028 photons 
E)  2.48 × 1025 photons

Question 6

Identify the ground-state electron configuration for the ion of Ba.

Accepted Answer

A)  [Kr]5s25p6 
B)  [Kr]5s24d105p66s26p2 
C)  [Kr]5s24d105p66s1 
D)  [Kr]5s24d105p66s2 
E)  [Kr]5s24d105p6 
A)  [Kr]5s25p6 
B)  [Kr]5s24d105p66s26p2 
C)  [Kr]5s24d105p66s1 
D)  [Kr]5s24d105p66s2 
E)  [Kr]5s24d105p6

Question 7

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

Accepted Answer

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

Question 8

Identify the set of four quantum numbers that represent the last electron added (using the aufbau principle) to the Zn atom.

Accepted Answer

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

Question 9

Which ion does not have a noble gas configuration in its ground state?

Accepted Answer

A)  Sc3+ 
B)  Al3+ 
C)  Ga3+ 
D)  As3- 
A)  Sc3+ 
B)  Al3+ 
C)  Ga3+ 
D)  As3-

Question 10

The vertical height of a wave is called ________.

Accepted Answer

A)  wavelength 
B)  amplitude 
C)  frequency 
D)  area 
E)  median 
A)  wavelength 
B)  amplitude 
C)  frequency 
D)  area 
E)  median

Question 11

Give all possible values of l for a 3 sublevel.

Accepted Answer

A)  0 
B)  1, 2 
C)  0, 1, 2 
D)  -1, 0, 1 
E)  0, 1, 2, 3 
A)  0 
B)  1, 2 
C)  0, 1, 2 
D)  -1, 0, 1 
E)  0, 1, 2, 3

Question 12

An electron ends in orbital n = 4 after a hydrogen atom emits a photon with a wavelength of 2165 nm. Calculate the initial orbital, ni.

Accepted Answer

A)  6 
B)  7 
C)  1 
D)  3 
E)  2 
A)  6 
B)  7 
C)  1 
D)  3 
E)  2

Question 13

Define constructive interference.

Accepted Answer

Waves comb

Question 14

Which of the following transitions (in a hydrogen atom) represent absorption of the smallest frequency photon?

Accepted Answer

A)  n = 5 to n = 6 
B)  n = 5 to n = 4 
C)  n = 4 to n = 1 
D)  n = 1 to n = 3 
E)  n = 1 to n = 2 
A)  n = 5 to n = 6 
B)  n = 5 to n = 4 
C)  n = 4 to n = 1 
D)  n = 1 to n = 3 
E)  n = 1 to n = 2

Question 15

The complete electron configuration of chromium, element 24, is ________.

Accepted Answer

A)          3p8 
B)          3p6 
C)  1s42s42p103s23p4 
D)  1s22s22p63s23p63d54s1 
E)  1s42s42p83s43p4 
A)          3p8 
B)          3p6 
C)  1s42s42p103s23p4 
D)  1s22s22p63s23p63d54s1 
E)  1s42s42p83s43p4

Question 16

Give the number of valence electrons for Mg2+.

Accepted Answer

Question 17

What are the possible values of l if n = 6?

Accepted Answer

A)  6 
B)  0, 1, 2, 3, 4, or 5 
C)  -4, -3, -2, -1, 0, +1, +2, +3, or +4 
D)  -5, -4, -3, -2, -1, 0, +1, +2, +3, +4, or +5 
A)  6 
B)  0, 1, 2, 3, 4, or 5 
C)  -4, -3, -2, -1, 0, +1, +2, +3, or +4 
D)  -5, -4, -3, -2, -1, 0, +1, +2, +3, +4, or +5

Question 18

Choose the paramagnetic species from below.

Accepted Answer

A)  Ca 
B)  O2⁻ 
C)  Cd2⁺ 
D)  Zn 
E)  Nb3⁺ 
A)  Ca 
B)  O2⁻ 
C)  Cd2⁺ 
D)  Zn 
E)  Nb3⁺

Question 19

Give the electron configuration for O.

Accepted Answer

A)  1s22s22p4 
B)  1s22p4 
C)  1s22s22p3 
D)  1s22s22p5 
E)  1s22s22p2 
A)  1s22s22p4 
B)  1s22p4 
C)  1s22s22p3 
D)  1s22s22p5 
E)  1s22s22p2

Question 20

Calculate the de Broglie wavelength of a pen with a mass of 14.28 g travelling at 16.3 m s-1.

Accepted Answer

A)  1.76 × 10-31 m 
B)  6.43 × 10-37 m 
C)  2.85 × 10-33 m 
D)  8.19 × 10-32 m 
E)  5.30 × 10-34 m 
A)  1.76 × 10-31 m 
B)  6.43 × 10-37 m 
C)  2.85 × 10-33 m 
D)  8.19 × 10-32 m 
E)  5.30 × 10-34 m

Exam 7: The Quantum-Mechanical Model of the Atom

What are the possible values of n and ml for an electron in a 3d orbital?

Identify the set of four quantum numbers that could represent the electron lost to form the K ION from the K atom.

When waves of equal amplitude from two sources are out of phase when they interact, it is called ________.

Give the value of l for a 3p sublevel.

How many photons are contained in a burst of yellow light (589 nm) from a sodium lamp that contains 609 kJ of energy?

Identify the ground-state electron configuration for the ion of Ba.

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

Identify the set of four quantum numbers that represent the last electron added (using the aufbau principle) to the Zn atom.

Which ion does not have a noble gas configuration in its ground state?

The vertical height of a wave is called ________.

Give all possible values of l for a 3 sublevel.

An electron ends in orbital n = 4 after a hydrogen atom emits a photon with a wavelength of 2165 nm. Calculate the initial orbital, ni.

Define constructive interference.

Which of the following transitions (in a hydrogen atom) represent absorption of the smallest frequency photon?

The complete electron configuration of chromium, element 24, is ________.

Give the number of valence electrons for Mg2+.

What are the possible values of l if n = 6?

Choose the paramagnetic species from below.

Give the electron configuration for O.

Calculate the de Broglie wavelength of a pen with a mass of 14.28 g travelling at 16.3 m s-1.

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

What are the possible values of n and m_l for an electron in a 3d orbital?

An electron ends in orbital n = 4 after a hydrogen atom emits a photon with a wavelength of 2165 nm. Calculate the initial orbital, n_i.

Give the number of valence electrons for Mg²⁺.

Calculate the de Broglie wavelength of a pen with a mass of 14.28 g travelling at 16.3 m s^-1.