Question 1

The ground- state electron configuration of the element is [Kr]5s14d5.

Accepted Answer

A)  Cr 
B)  Tc 
C)  Nb 
D)  Mn 
E)  Mo 
A)  Cr 
B)  Tc 
C)  Nb 
D)  Mn 
E)  Mo

Question 2

The total number of orbitals in a shell is given by _.

Accepted Answer

A)  n2  
B)  2l + 1 
C)  I2  
D)  2n + 1 
E)  2n 
A)  n2  
B)  2l + 1 
C)  I2  
D)  2n + 1 
E)  2n

Question 3

The element that corresponds to the electron configuration 1s22s22p6 is .

Accepted Answer

A)  beryllium 
B)  neon 
C)  magnesium 
D)  sodium 
E)  lithium 
A)  beryllium 
B)  neon 
C)  magnesium 
D)  sodium 
E)  lithium

Question 4

The valence shell of the element X contains 2 electrons in a 5s subshell. Below that shell, element X has a partially filled 4d subshell. What type of element is X?

Accepted Answer

A)  alkali metal 
B)  chalcogen 
C)  transition metal 
D)  halogen 
E)  main group element 
A)  alkali metal 
B)  chalcogen 
C)  transition metal 
D)  halogen 
E)  main group element

Question 5

Which one of the following is an incorrect orbital notation?

Accepted Answer

A)  3py  
B)  4s 
C)  4dxy  
D)  3f 
E)  2s 
A)  3py  
B)  4s 
C)  4dxy  
D)  3f 
E)  2s

Question 6

In which orbital does an electron in a phosphorus atom experience the greatest effective nuclear charge?

Accepted Answer

A)  1s 
B)  2s 
C)  2p 
D)  3s 
E)  3p 
A)  1s 
B)  2s 
C)  2p 
D)  3s 
E)  3p

Question 7

The energy of a photon that has a wavelength of 12.3 nm is _ J.

Accepted Answer

A)  1.51 × 10- 17 
B)  4.42 × 10- 23 
C)  2.72 × 10- 50 
D)  1.99 × 10- 25 
E)  1.62 × 10- 17 
A)  1.51 × 10- 17 
B)  4.42 × 10- 23 
C)  2.72 × 10- 50 
D)  1.99 × 10- 25 
E)  1.62 × 10- 17

Question 8

Which quantum numbers must be the same for the orbitals that they designate to be degenerate in a many- electron system?

Accepted Answer

A)  n, l, and ml 
B)  n only 
C)  n, l, ml, and ms 
D)  n and l only 
E)  ms only 
A)  n, l, and ml 
B)  n only 
C)  n, l, ml, and ms 
D)  n and l only 
E)  ms only

Question 9

Which is the correct ground- state electron configuration for silver ?

Accepted Answer

A)  [Xe]5s14d10 
B)  [Kr]5s24d10 
C)  [Kr]5s24d9 
D)  [Kr]5s14d10 
E)  [Xe]5s24d9 
A)  [Xe]5s14d10 
B)  [Kr]5s24d10 
C)  [Kr]5s24d9 
D)  [Kr]5s14d10 
E)  [Xe]5s24d9

Question 10

The azimuthal quantum number is 3 in orbitals.

Accepted Answer

A)  s 
B)  f 
C)  d 
D)  p 
E)  a 
A)  s 
B)  f 
C)  d 
D)  p 
E)  a

Question 11

A _ _ orbital is degenerate with a 5dS1U1B1zS1U1B0S1U1P12S1S1P0in a many- electron atom.

Accepted Answer

A)  4dS1U1B1zzS1U1B0 
B)  5dS1U1B1xyS1U1B0 
C)  5pS1U1B1zS1U1B0 
D)  5s 
E)  4dS1U1B1zS1U1B0S1U1P12S1S1P0 
A)  4dS1U1B1zzS1U1B0 
B)  5dS1U1B1xyS1U1B0 
C)  5pS1U1B1zS1U1B0 
D)  5s 
E)  4dS1U1B1zS1U1B0S1U1P12S1S1P0

Question 12

What is the correct ground- state electron configuration for molybdenum ?

Accepted Answer

A)  [Kr]5s24d9 
B)  [Kr]5s24d5 
C)  [Kr]5s14d10 
D)  [Kr]5s24d4 
E)  [Kr]5s14d5 
A)  [Kr]5s24d9 
B)  [Kr]5s24d5 
C)  [Kr]5s14d10 
D)  [Kr]5s24d4 
E)  [Kr]5s14d5

Question 13

The de Broglie wavelength of a bullet (7.5g) traveling at 700 m/s is m.

Accepted Answer

A)  7.7 × 1033 
B)  1.3 × 10- 23 
C)  1.3 × 10- 34 
D)  6.2 × 10- 29 
E)  1.3 × 10- 27 
A)  7.7 × 1033 
B)  1.3 × 10- 23 
C)  1.3 × 10- 34 
D)  6.2 × 10- 29 
E)  1.3 × 10- 27

Question 14

Which one of the following is considered to be ionizing radiation ?

Accepted Answer

A)  radio waves 
B)  X- rays 
C)  infrared radiation 
D)  microwaves 
E)  visible light 
A)  radio waves 
B)  X- rays 
C)  infrared radiation 
D)  microwaves 
E)  visible light

Question 15

Which set of three quantum numbers (n, l, ml) corresponds to a 3d orbital?

Accepted Answer

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

Question 16

At what speed (m/s) must a 10 mg object be moving to have a de Broglie wavelength of 3.3 × 10- 41 m ?

Accepted Answer

A)  4.1 
B)  2.0 × 1012 
C)  3.3 × 10- 42 
D)  1.9 × 10- 11 
E)  1.9 × 1013 
A)  4.1 
B)  2.0 × 1012 
C)  3.3 × 10- 42 
D)  1.9 × 10- 11 
E)  1.9 × 1013

Question 17

In the Bohr model of the atom, .

Accepted Answer

A)  electron paths are controlled by probability 
B)  electrons travel in circular paths called orbitals 
C)  electrons can have any energy 
D)  electron energies are quantized 
E)  both A and C 
A)  electron paths are controlled by probability 
B)  electrons travel in circular paths called orbitals 
C)  electrons can have any energy 
D)  electron energies are quantized 
E)  both A and C

Question 18

What is the frequency (s- 1) of a photon that has an energy of 4.38 × 10- 18J?

Accepted Answer

A)  1.45 × 10- 16 
B)  2.30 × 107 
C)  1.31 × 10- 9 
D)  6.61 × 1015 
E)  436 
A)  1.45 × 10- 16 
B)  2.30 × 107 
C)  1.31 × 10- 9 
D)  6.61 × 1015 
E)  436

Question 19

The energy of a photon of light is _ proportional to its frequency and proportional to its wavelength.

Accepted Answer

A)  indirectly, not 
B)  inversely, directly 
C)  directly, inversely 
D)  inversely, inversely 
E)  directly, directly 
A)  indirectly, not 
B)  inversely, directly 
C)  directly, inversely 
D)  inversely, inversely 
E)  directly, directly

Question 20

The energy of a photon that has a wavelength of 9.0 m is J.

Accepted Answer

A)  6.0 × 10- 23 
B)  2.2 × 10- 26 
C)  4.5 × 10- 25 
D)  2.7 × 109 
E)  4.5 × 1025 
A)  6.0 × 10- 23 
B)  2.2 × 10- 26 
C)  4.5 × 10- 25 
D)  2.7 × 109 
E)  4.5 × 1025

Exam 6: Electronic Structure of Atoms

The ground- state electron configuration of the element is [Kr]5s14d5.

The total number of orbitals in a shell is given by _.

The element that corresponds to the electron configuration 1s22s22p6 is .

The valence shell of the element X contains 2 electrons in a 5s subshell. Below that shell, element X has a partially filled 4d subshell. What type of element is X?

Which one of the following is an incorrect orbital notation?

In which orbital does an electron in a phosphorus atom experience the greatest effective nuclear charge?

The energy of a photon that has a wavelength of 12.3 nm is _ J.

Which quantum numbers must be the same for the orbitals that they designate to be degenerate in a many- electron system?

Which is the correct ground- state electron configuration for silver ?

The azimuthal quantum number is 3 in orbitals.

A _ _ orbital is degenerate with a 5dz2in a many- electron atom.

What is the correct ground- state electron configuration for molybdenum ?

The de Broglie wavelength of a bullet (7.5g) traveling at 700 m/s is m.

Which one of the following is considered to be ionizing radiation ?

Which set of three quantum numbers (n, l, ml) corresponds to a 3d orbital?

At what speed (m/s) must a 10 mg object be moving to have a de Broglie wavelength of 3.3 × 10- 41 m ?

In the Bohr model of the atom, .

What is the frequency (s- 1) of a photon that has an energy of 4.38 × 10- 18J?

The energy of a photon of light is _ proportional to its frequency and proportional to its wavelength.

The energy of a photon that has a wavelength of 9.0 m is J.

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Gases

Intermolecular Forces, Liquids, and Solids

Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Chemistry of Coordination Compounds

The Chemistry of Life: Organic and Biological Chemistry

Filters

The ground- state electron configuration of the element is [Kr]5s¹4d⁵.

The element that corresponds to the electron configuration 1s²2s²2p⁶is .

A _ _ orbital is degenerate with a 5d_z²in a many- electron atom.

Which set of three quantum numbers (n, l, m_l) corresponds to a 3d orbital?

At what speed (m/s) must a 10 mg object be moving to have a de Broglie wavelength of 3.3 × 10^-⁴¹ m ?

What is the frequency (s^-¹) of a photon that has an energy of 4.38 × 10^-¹⁸J?