Question 1

Identify the ground-state electron configuration for Mg2⁺.

Accepted Answer

A)  1s22s22p63s2 
B)  1s22s22p6 
C)  1s22s22p63s23p2 
D)  1s22s22p63s23p6 
E)  1s22s22p63s1 
A)  1s22s22p63s2 
B)  1s22s22p6 
C)  1s22s22p63s23p2 
D)  1s22s22p63s23p6 
E)  1s22s22p63s1

Question 2

Which of the following visible colours of light has the highest frequency?

Accepted Answer

A)  green 
B)  red 
C)  blue 
D)  yellow 
E)  orange 
A)  green 
B)  red 
C)  blue 
D)  yellow 
E)  orange

Question 3

It is possible to determine the ionization energy for hydrogen using the Bohr equation. Calculate the ionization energy for an atom of hydrogen, making the assumption that ionization is the transition from n = 1 to n = ∞.

Accepted Answer

A)  -2.18 × 10-18 J 
B)  +2 .18 × 10-18 J 
C)  +4.59 × 10-18 J 
D)  -4.59 × 10-18 J 
E)  +4.36 × 10-18 J 
A)  -2.18 × 10-18 J 
B)  +2 .18 × 10-18 J 
C)  +4.59 × 10-18 J 
D)  -4.59 × 10-18 J 
E)  +4.36 × 10-18 J

Question 4

A sunburn is caused by overexposure to ________ radiation.

Accepted Answer

A)  ultraviolet 
B)  gamma 
C)  microwave 
D)  X-ray 
E)  radio 
A)  ultraviolet 
B)  gamma 
C)  microwave 
D)  X-ray 
E)  radio

Question 5

Why don't we observe the wavelength of everyday macroscopic objects?

Accepted Answer

Due to the large mass of macro

Question 6

Give the ground-state electron configuration for Br⁻.

Accepted Answer

A)  [Ar]4s23d104p6 
B)  [Ar]4s23d104p5 
C)  [Ar]4s24p6 
D)  [Ar]4s24d104p6 
E)  [Ar]4s23d104p4 
A)  [Ar]4s23d104p6 
B)  [Ar]4s23d104p5 
C)  [Ar]4s24p6 
D)  [Ar]4s24d104p6 
E)  [Ar]4s23d104p4

Question 7

Determine the longest wavelength of light required to remove an electron from a sample of potassium metal if the binding energy for an electron in potassium metal is 1.76 × 103 kJ mol-1.

Accepted Answer

A)  147 nm 
B)  68.0 nm 
C)  113 nm 
D)  885 nm 
E)  387 nm 
A)  147 nm 
B)  68.0 nm 
C)  113 nm 
D)  885 nm 
E)  387 nm

Question 8

Place the following types of electromagnetic radiation in order of decreasing energy. ultraviolet light radio waves microwaves

Accepted Answer

A)  radio waves > microwaves > ultraviolet light 
B)  ultraviolet light > microwaves > radio waves 
C)  radio waves > ultraviolet light > microwaves 
D)  ultraviolet light > radio waves > microwaves 
E)  microwaves > radio waves > ultraviolet light 
A)  radio waves > microwaves > ultraviolet light 
B)  ultraviolet light > microwaves > radio waves 
C)  radio waves > ultraviolet light > microwaves 
D)  ultraviolet light > radio waves > microwaves 
E)  microwaves > radio waves > ultraviolet light

Question 9

The pattern of systematically building up the electron configurations for the elements is known as ________.

Accepted Answer

A)  Coulomb's law 
B)  the Pauli exclusion principle 
C)  Hund's rule 
D)  the aufbau principle 
A)  Coulomb's law 
B)  the Pauli exclusion principle 
C)  Hund's rule 
D)  the aufbau principle

Question 10

Give the number of core electrons for Mg2+.

Accepted Answer

Question 11

Calculate the de Broglie wavelength of an egg with a mass of 60 g travelling at 32.18 m s-1.

Accepted Answer

A)  5.0 × 10-34 m 
B)  2.8 × 10-34 m 
C)  4.9 × 10-34 m 
D)  1.2 × 10-34 m 
E)  3.4 × 10-34 m 
A)  5.0 × 10-34 m 
B)  2.8 × 10-34 m 
C)  4.9 × 10-34 m 
D)  1.2 × 10-34 m 
E)  3.4 × 10-34 m

Question 12

Calculate the wavelength of light absorbed by a hydrogen atom when an electron undergoes an n = 2 to n = 4 transmission.

Accepted Answer

A)  433.9 nm 
B)  410.0 nm 
C)  1093 nm 
D)  486.0 nm 
E)  3295 nm 
A)  433.9 nm 
B)  410.0 nm 
C)  1093 nm 
D)  486.0 nm 
E)  3295 nm

Question 13

Determine the mass of a ball with a wavelength of 3.45 × 10-34 m and a velocity of 6.55 m s-1.

Accepted Answer

A)  0.293 g 
B)  12.6 g 
C)  293 g 
D)  346 g 
E)  3.41 g 
A)  0.293 g 
B)  12.6 g 
C)  293 g 
D)  346 g 
E)  3.41 g

Question 14

What value of l is represented by a d orbital?

Accepted Answer

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

Question 15

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

Accepted Answer

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

Question 16

Choose the diamagnetic species from below.

Accepted Answer

A)  Sn2⁺ 
B)  Br 
C)  P 
D)  Cr 
E)  None of the above is diamagnetic. 
A)  Sn2⁺ 
B)  Br 
C)  P 
D)  Cr 
E)  None of the above is diamagnetic.

Question 17

What is the photoelectric effect?

Accepted Answer

Many metals emit electrons whe

Question 18

The de Broglie wavelength of an electron with a velocity of 9.00 ×   m s-1 is ________ m. The mass of the electron is 9.11 ×   g.

Accepted Answer

A)  1.24 × 1010 
B)  1.24 × 1013 
C)  8.08 × 10-17 
D)  8.08 × 10-14 
E)  8.08 × 10-11 
A)  1.24 × 1010 
B)  1.24 × 1013 
C)  8.08 × 10-17 
D)  8.08 × 10-14 
E)  8.08 × 10-11

Question 19

Calculate the velocity of a pickup truck with a de Broglie wavelength of 1.27 × 10-38 m and a mass of 2347 kg.

Accepted Answer

A)  88 km h-1 
B)  62.1 km h-1 
C)  94 km h-1 
D)  80.0 km h-1 
E)  106 km h-1 
A)  88 km h-1 
B)  62.1 km h-1 
C)  94 km h-1 
D)  80.0 km h-1 
E)  106 km h-1

Question 20

Give the number of valence electrons for Br-.

Accepted Answer

A)  16 
B)  18 
C)  6 
D)  8 
E)  7 
A)  16 
B)  18 
C)  6 
D)  8 
E)  7

Exam 7: The Quantum-Mechanical Model of the Atom

Identify the ground-state electron configuration for Mg2⁺.

Which of the following visible colours of light has the highest frequency?

It is possible to determine the ionization energy for hydrogen using the Bohr equation. Calculate the ionization energy for an atom of hydrogen, making the assumption that ionization is the transition from n = 1 to n = ∞.

A sunburn is caused by overexposure to ________ radiation.

Why don't we observe the wavelength of everyday macroscopic objects?

Give the ground-state electron configuration for Br⁻.

Determine the longest wavelength of light required to remove an electron from a sample of potassium metal if the binding energy for an electron in potassium metal is 1.76 × 103 kJ mol-1.

Place the following types of electromagnetic radiation in order of decreasing energy. ultraviolet light radio waves microwaves

The pattern of systematically building up the electron configurations for the elements is known as ________.

Give the number of core electrons for Mg2+.

Calculate the de Broglie wavelength of an egg with a mass of 60 g travelling at 32.18 m s-1.

Calculate the wavelength of light absorbed by a hydrogen atom when an electron undergoes an n = 2 to n = 4 transmission.

Determine the mass of a ball with a wavelength of 3.45 × 10-34 m and a velocity of 6.55 m s-1.

What value of l is represented by a d orbital?

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

Choose the diamagnetic species from below.

What is the photoelectric effect?

The de Broglie wavelength of an electron with a velocity of 9.00 × m s-1 is ________ m. The mass of the electron is 9.11 × g.

Calculate the velocity of a pickup truck with a de Broglie wavelength of 1.27 × 10-38 m and a mass of 2347 kg.

Give the number of valence electrons for Br-.

Units of Measurement for Physical and Chemical Change

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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

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Filters

Identify the ground-state electron configuration for Mg²⁺.

Determine the longest wavelength of light required to remove an electron from a sample of potassium metal if the binding energy for an electron in potassium metal is 1.76 × 10³ kJ mol^-1.

Give the number of core electrons for Mg²⁺.

Calculate the de Broglie wavelength of an egg with a mass of 60 g travelling at 32.18 m s^-1.

Determine the mass of a ball with a wavelength of 3.45 × 10^-34m and a velocity of 6.55 m s^-1.

The de Broglie wavelength of an electron with a velocity of 9.00 × m s^-1 is ________ m. The mass of the electron is 9.11 × g.

Calculate the velocity of a pickup truck with a de Broglie wavelength of 1.27 × 10^-38 m and a mass of 2347 kg.

Give the number of valence electrons for Br^-.