Question 1

Which reaction below represents the second ionization of Lr?

Accepted Answer

A)  Lr (g) → Lr+(g) + e⁻ 
B)  Lr2+(g) + e⁻ → Lr+(g) 
C)  Lr⁺(g) + e⁻ → Lr(g) 
D)  Lr2-(g) + e⁻ → Lr3-(g) 
E)  Lr⁺(g) → Lr2⁺(g) + e⁻ 
A)  Lr (g) → Lr+(g) + e⁻ 
B)  Lr2+(g) + e⁻ → Lr+(g) 
C)  Lr⁺(g) + e⁻ → Lr(g) 
D)  Lr2-(g) + e⁻ → Lr3-(g) 
E)  Lr⁺(g) → Lr2⁺(g) + e⁻

Question 2

Which ionization process requires the most energy?

Accepted Answer

A)  C(g) → C+(g) + e- 
B)  C+(g) → C2+(g) + e- 
C)  C2+(g) → C3+(g) + e- 
D)  C3+(g) → C4+(g) + e- 
A)  C(g) → C+(g) + e- 
B)  C+(g) → C2+(g) + e- 
C)  C2+(g) → C3+(g) + e- 
D)  C3+(g) → C4+(g) + e-

Question 3

Identify the d-block element.

Accepted Answer

A)  Th 
B)  W 
C)  Na 
D)  Te 
E)  None of the above 
A)  Th 
B)  W 
C)  Na 
D)  Te 
E)  None of the above

Question 4

Halogens can react with each other to form

Accepted Answer

A)  covalent bonds. 
B)  ionic bonds. 
C)  salts. 
D)  hydrogen halides. 
E)  metal halides. 
A)  covalent bonds. 
B)  ionic bonds. 
C)  salts. 
D)  hydrogen halides. 
E)  metal halides.

Question 5

How many valence electrons does an atom of Tl possess?

Accepted Answer

A)  3 
B)  5 
C)  0 
D)  4 
E)  7 
A)  3 
B)  5 
C)  0 
D)  4 
E)  7

Question 6

Which atom in each group (I and II)has the smallest atomic radius? (I)Ca,Ti,Br (II)O,S,Se

Accepted Answer

A)  Ca; O 
B)  Ca; Se 
C)  Br; O 
D)  Br; Se 
A)  Ca; O 
B)  Ca; Se 
C)  Br; O 
D)  Br; Se

Question 7

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

Accepted Answer

A)  n = 6, l = 0, ml = 0 ms = -   
B)  n = 4, l = 1, ml = 1, ms = -   
C)  n = 5, l = 0, ml = 0, ms = -   
D)  n = 4, l = 1, ml = 0, ms = +   
E)  n = 5, l = 0, ml = 0, ms = +   
A)  n = 6, l = 0, ml = 0 ms = -   
B)  n = 4, l = 1, ml = 1, ms = -   
C)  n = 5, l = 0, ml = 0, ms = -   
D)  n = 4, l = 1, ml = 0, ms = +   
E)  n = 5, l = 0, ml = 0, ms = +

Question 8

Identify the isoelectronic elements.

Accepted Answer

A)  Cl-, F-, Br-, I-, At- 
B)  N3-, S2-, Br-, Cs+, Sr2+ 
C)  P3-, S2-, C1-, K+, Ca2+ 
D)  Zn2+, Co2+, Cu2+, Cr2+, Cd2+ 
E)  Ne, Ar, Kr, Xe, He 
A)  Cl-, F-, Br-, I-, At- 
B)  N3-, S2-, Br-, Cs+, Sr2+ 
C)  P3-, S2-, C1-, K+, Ca2+ 
D)  Zn2+, Co2+, Cu2+, Cr2+, Cd2+ 
E)  Ne, Ar, Kr, Xe, He

Question 9

Of the following,which atom has the smallest atomic radius?

Accepted Answer

A)  Sr 
B)  Te 
C)  Ba 
D)  Po 
A)  Sr 
B)  Te 
C)  Ba 
D)  Po

Question 10

Place the following in order of decreasing IE1. Cs Mg Ar

Accepted Answer

A)  Cs > Mg > Ar 
B)  Mg > Ar > Cs 
C)  Ar > Mg > Cs 
D)  Cs > Ar > Mg 
E)  Mg > Cs > Ar 
A)  Cs > Mg > Ar 
B)  Mg > Ar > Cs 
C)  Ar > Mg > Cs 
D)  Cs > Ar > Mg 
E)  Mg > Cs > Ar

Question 11

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 is 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 is true.

Question 12

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 13

Identify the transition element.

Accepted Answer

A)  Fm 
B)  W 
C)  K 
D)  S 
E)  None of the above 
A)  Fm 
B)  W 
C)  K 
D)  S 
E)  None of the above

Question 14

Why is the first ionization energy of sulfur smaller than the first ionization energy of phosphorus?

Accepted Answer

When sulfur loses one electron,it takes

Question 15

The complete electron configuration of silicon,element 14,is ________.

Accepted Answer

A)   
 
  3s23p2 
B)   
  2p10 
C)   
  2p6  
D)    1p62s4 
E)    2s62p2  
A)   
 
  3s23p2 
B)   
  2p10 
C)   
  2p6  
D)    1p62s4 
E)    2s62p2

Question 16

Give 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 = 2, 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 = 2, ml = 2, ms = +   
E)  n = 4, l = 2 ml = 0, ms = -

Question 17

Of the following,which element has the highest first ionization energy?

Accepted Answer

A)  Ra 
B)  At 
C)  Cs 
D)  Po 
A)  Ra 
B)  At 
C)  Cs 
D)  Po

Question 18

Below is a list of successive ionization energies (in kJ/mol)for a period 3 element.Identify the element and explain how you came to that conclusion.
IE2 = 2250 IE3 = 3360 IE4 = 4560 IE5 = 7010 IE6 = 8500 IE7 = 27,100

Accepted Answer

The large increase in ionizati

Question 19

Give the ground state electron configuration for Mg2+.

Accepted Answer

A)  1s22s22p63s2 
B)  1s22s22p6 
C)  1s22s22p63s23p2 
D)  1s22s22p63s23p6 
E)  1s22s22p2 
A)  1s22s22p63s2 
B)  1s22s22p6 
C)  1s22s22p63s23p2 
D)  1s22s22p63s23p6 
E)  1s22s22p2

Question 20

How many electrons are in the outermost shell of the Al3+ ion in its ground state?

Accepted Answer

A)  2 
B)  3 
C)  6 
D)  8 
A)  2 
B)  3 
C)  6 
D)  8

Exam 8: Periodic Properties of the Elements

Which reaction below represents the second ionization of Lr?

Which ionization process requires the most energy?

Identify the d-block element.

Halogens can react with each other to form

How many valence electrons does an atom of Tl possess?

Which atom in each group (I and II)has the smallest atomic radius? (I)Ca,Ti,Br (II)O,S,Se

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

Identify the isoelectronic elements.

Of the following,which atom has the smallest atomic radius?

Place the following in order of decreasing IE1. Cs Mg Ar

Which of the following statements is TRUE?

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

Identify the transition element.

Why is the first ionization energy of sulfur smaller than the first ionization energy of phosphorus?

The complete electron configuration of silicon,element 14,is ________.

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

Of the following,which element has the highest first ionization energy?

Below is a list of successive ionization energies (in kJ/mol)for a period 3 element.Identify the element and explain how you came to that conclusion. IE2 = 2250 IE3 = 3360 IE4 = 4560 IE5 = 7010 IE6 = 8500 IE7 = 27,100

Give the ground state electron configuration for Mg2+.

How many electrons are in the outermost shell of the Al3+ ion in its ground state?

Matter, measurement, and Problem Solving

Atoms and Elements

Molecules,compounds,and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes,valence Bond Theory,

Liquids,solids,and Intermolecular Forces

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

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Place the following in order of decreasing IE₁. Cs Mg Ar

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

Below is a list of successive ionization energies (in kJ/mol)for a period 3 element.Identify the element and explain how you came to that conclusion. IE₂ = 2250 IE₃ = 3360 IE₄= 4560 IE₅= 7010 IE₆= 8500 IE₇= 27,100

Give the ground state electron configuration for Mg²⁺.

How many electrons are in the outermost shell of the Al³⁺ ion in its ground state?