Question 1

Give the number of core electrons for Cd.

Accepted Answer

A)  44 
B)  48 
C)  46 
D)  45 
E)  47 
A)  44 
B)  48 
C)  46 
D)  45 
E)  47

Question 2

Give the ground state electron configuration for Sr.

Accepted Answer

A)  [Kr]5s24d2 
B)  [Kr]5s24d105p2 
C)  [Kr]5s2 
D)  [Kr]5s25d105p2 
E)  [Kr]5s24d10 
A)  [Kr]5s24d2 
B)  [Kr]5s24d105p2 
C)  [Kr]5s2 
D)  [Kr]5s25d105p2 
E)  [Kr]5s24d10

Question 3

Which of the following statements is TRUE?

Accepted Answer

A)  An orbital that penetrates into the region occupied by core electrons is less shielded from nuclear charge than an orbital that does not penetrate and therefore has a lower energy. 
B)  An orbital that penetrates into the region occupied by core electrons is more shielded from nuclear charge than an orbital that does not penetrate and therefore has a lower energy. 
C)  It is possible for two electrons in the same atom to have identical values for all four quantum numbers. 
D)  Two electrons in the same orbital can have the same spin. 
E)  None of the above are true. 
A)  An orbital that penetrates into the region occupied by core electrons is less shielded from nuclear charge than an orbital that does not penetrate and therefore has a lower energy. 
B)  An orbital that penetrates into the region occupied by core electrons is more shielded from nuclear charge than an orbital that does not penetrate and therefore has a lower energy. 
C)  It is possible for two electrons in the same atom to have identical values for all four quantum numbers. 
D)  Two electrons in the same orbital can have the same spin. 
E)  None of the above are true.

Question 4

Predict the charge that an ion formed from phosphorus would have.

Accepted Answer

A)  1- 
B)  3+ 
C)  3- 
D)  1+ 
E)  2- 
A)  1- 
B)  3+ 
C)  3- 
D)  1+ 
E)  2-

Question 5

A cation of +2 indicates that an element has

Accepted Answer

A)  lost two electrons. 
B)  lost two protons. 
C)  lost two neutrons. 
D)  gained two electrons. 
E)  gained two protons. 
A)  lost two electrons. 
B)  lost two protons. 
C)  lost two neutrons. 
D)  gained two electrons. 
E)  gained two protons.

Question 6

Which element has the highest first ionization energy?

Accepted Answer

A)  Cl 
B)  S 
C)  I 
D)  P 
E)  Ca 
A)  Cl 
B)  S 
C)  I 
D)  P 
E)  Ca

Question 7

Choose the valence orbital diagram that represents the ground state of Se2⁻.

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 8

Which of the following elements is a nonmetal?

Accepted Answer

A)  Pu 
B)  C 
C)  Br 
D)  Li 
E)  Mg 
A)  Pu 
B)  C 
C)  Br 
D)  Li 
E)  Mg

Question 9

The element that corresponds to the electron configuration 1s22s22p63s23p64s13d5 is

Accepted Answer

A)  titanium. 
B)  vanadium. 
C)  chromium. 
D)  manganese. 
E)  iron. 
A)  titanium. 
B)  vanadium. 
C)  chromium. 
D)  manganese. 
E)  iron.

Question 10

Give the complete electronic configuration for Br-.

Accepted Answer

A)  1s22s22p63s23p64s24p6 
B)  1s22s22p63s23p64s24d104p6 
C)  1s22s22p63s23p64s23d104p6 
D)  1s22s22p63s23p64s23d104p5 
E)  1s22s2p63s2p64s23d104p6 
A)  1s22s22p63s23p64s24p6 
B)  1s22s22p63s23p64s24d104p6 
C)  1s22s22p63s23p64s23d104p6 
D)  1s22s22p63s23p64s23d104p5 
E)  1s22s2p63s2p64s23d104p6

Question 11

Give the number of valence electrons for Cd.

Accepted Answer

A)  8 
B)  10 
C)  12 
D)  2 
E)  6 
A)  8 
B)  10 
C)  12 
D)  2 
E)  6

Question 12

What period 3 element has the following ionization energies (all in kJ/mol)?
IE1 = 1012 IE2 = 1900 IE3= 2910 IE4= 4960 IE5= 6270 IE6 = 22,200

Accepted Answer

A)  Si 
B)  S 
C)  P 
D)  Cl 
E)  Mg 
A)  Si 
B)  S 
C)  P 
D)  Cl 
E)  Mg

Question 13

Give the ground state electron configuration for Rb⁺.

Accepted Answer

A)  [Ar]4s24p6 
B)  [Kr]5s1 
C)  [Ar]4s23d104p6 
D)  [Kr]5s2 
E)  [Kr]5s24d2 
A)  [Ar]4s24p6 
B)  [Kr]5s1 
C)  [Ar]4s23d104p6 
D)  [Kr]5s2 
E)  [Kr]5s24d2

Question 14

Identify the species that has the smallest radius.

Accepted Answer

A)  N-5 
B)  N-2 
C)  N0 
D)  N+1 
E)  N+3 
A)  N-5 
B)  N-2 
C)  N0 
D)  N+1 
E)  N+3

Question 15

Which reaction below represents the second ionization of Sr?

Accepted Answer

A)  Sr(g) → Sr⁺(g) + e⁻ 
B)  Sr2⁺(g) + e⁻ → Sr⁺(g) 
C)  Sr⁺(g) + e⁻ → Sr(g) 
D)  Sr⁻(g) + e⁻ → Sr2⁻(g) 
E)  Sr⁺(g) → Sr2⁺(g) + e⁻ 
A)  Sr(g) → Sr⁺(g) + e⁻ 
B)  Sr2⁺(g) + e⁻ → Sr⁺(g) 
C)  Sr⁺(g) + e⁻ → Sr(g) 
D)  Sr⁻(g) + e⁻ → Sr2⁻(g) 
E)  Sr⁺(g) → Sr2⁺(g) + e⁻

Question 16

Place the following elements in order of increasing atomic radius. P Ba Cl

Accepted Answer

A)  Ba < P < Cl 
B)  P < Cl < Ba 
C)  Cl < P < Ba 
D)  Cl < Ba < P 
E)  Ba < Cl < P 
A)  Ba < P < Cl 
B)  P < Cl < Ba 
C)  Cl < P < Ba 
D)  Cl < Ba < P 
E)  Ba < Cl < P

Question 17

Which describes the valance electrons of magnesium?

Accepted Answer

A)  3s0 
B)  3s1 
C)  3s2 
D)  3s2d1 
E)  3s2d2 
A)  3s0 
B)  3s1 
C)  3s2 
D)  3s2d1 
E)  3s2d2

Question 18

Which reaction below represents the second electron affinity of S?

Accepted Answer

A)  S(g) + e⁻ → S⁻(g) 
B)  S⁻(g) + e⁻ → S2⁻(g) 
C)  S(g) → S⁺(g) + e⁻ 
D)  S⁻(g) → S(g) + e⁻ 
E)  S2⁻(g) → S⁻(g) + e⁻ 
A)  S(g) + e⁻ → S⁻(g) 
B)  S⁻(g) + e⁻ → S2⁻(g) 
C)  S(g) → S⁺(g) + e⁻ 
D)  S⁻(g) → S(g) + e⁻ 
E)  S2⁻(g) → S⁻(g) + e⁻

Question 19

Which of the following elements has chemical properties similar to selenium?

Accepted Answer

A)  fluorine 
B)  hydrogen 
C)  nitrogen 
D)  sulfur 
A)  fluorine 
B)  hydrogen 
C)  nitrogen 
D)  sulfur

Question 20

Describe the reaction of the alkali metals with non-metals.

Accepted Answer

A)  inert 
B)  vigorous 
C)  mild reaction 
D)  forms water 
E)  dissolves 
A)  inert 
B)  vigorous 
C)  mild reaction 
D)  forms water 
E)  dissolves

Exam 4: Periodic Properties of the Elements

Give the number of core electrons for Cd.

Give the ground state electron configuration for Sr.

Which of the following statements is TRUE?

Predict the charge that an ion formed from phosphorus would have.

A cation of +2 indicates that an element has

Which element has the highest first ionization energy?

Choose the valence orbital diagram that represents the ground state of Se2⁻.

Which of the following elements is a nonmetal?

The element that corresponds to the electron configuration 1s22s22p63s23p64s13d5 is

Give the complete electronic configuration for Br-.

Give the number of valence electrons for Cd.

What period 3 element has the following ionization energies (all in kJ/mol)? IE1 = 1012 IE2 = 1900 IE3= 2910 IE4= 4960 IE5= 6270 IE6 = 22,200

Give the ground state electron configuration for Rb⁺.

Identify the species that has the smallest radius.

Which reaction below represents the second ionization of Sr?

Place the following elements in order of increasing atomic radius. P Ba Cl

Which describes the valance electrons of magnesium?

Which reaction below represents the second electron affinity of S?

Which of the following elements has chemical properties similar to selenium?

Describe the reaction of the alkali metals with non-metals.

Essentials: Units, Measurements, and Problem Solving

Atoms

The Quantum Mechanical Model of the Atom

Molecules and Compounds

Chemical Bonding I

Chemical Bonding Ii

Chemical Reactions and Chemical Quantities

Introduction to Solutions and Aqueous Reactions

Thermochemistry

Gases

Liquids, Solids, and Intermolecular Forces

Crystalline Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Transition Metals and Coordination Compounds

Filters

Choose the valence orbital diagram that represents the ground state of Se²⁻.

The element that corresponds to the electron configuration 1s²2s²2p⁶3s²3p⁶4s¹3d⁵ is

Give the complete electronic configuration for Br^-.

What period 3 element has the following ionization energies (all in kJ/mol)? IE₁ = 1012 IE₂ = 1900 IE₃= 2910 IE₄= 4960 IE₅= 6270 IE₆= 22,200