Question 1

Of the following elements, has the most negative electron affinity.

Accepted Answer

A)  Li 
B)  F 
C)  N 
D)  Na 
E)  Be 
A)  Li 
B)  F 
C)  N 
D)  Na 
E)  Be

Question 2

The atomic radius of main- group elements generally increases down a group because .

Accepted Answer

A)  the principal quantum number of the valence orbitals increases 
B)  effective nuclear charge decreases down a group 
C)  effective nuclear charge increases down a group 
D)  effective nuclear charge zigzags down a group 
E)  both effective nuclear charge increases down a group and the principal quantum number of the valence orbitals increases 
A)  the principal quantum number of the valence orbitals increases 
B)  effective nuclear charge decreases down a group 
C)  effective nuclear charge increases down a group 
D)  effective nuclear charge zigzags down a group 
E)  both effective nuclear charge increases down a group and the principal quantum number of the valence orbitals increases

Question 3

Which element is solid at room temperature?

Accepted Answer

A)  I2  
B)  Br2  
C)  H2  
D)  F2  
E)  Cl2 
A)  I2  
B)  Br2  
C)  H2  
D)  F2  
E)  Cl2

Question 4

The reaction of a metal with a nonmetal produces a(n) _.

Accepted Answer

A)  salt 
B)  oxide 
C)  acid 
D)  base 
E)  hydroxide 
A)  salt 
B)  oxide 
C)  acid 
D)  base 
E)  hydroxide

Question 5

have the lowest first ionization energies of the groups listed.

Accepted Answer

A)  Halogens 
B)  Alkali metals 
C)  Transition elements 
D)  Noble gases 
E)  Alkaline earth metals 
A)  Halogens 
B)  Alkali metals 
C)  Transition elements 
D)  Noble gases 
E)  Alkaline earth metals

Question 6

When two elements combine to form a compound, the greater the difference in metallic character between the two elements, the greater the likelihood that the compound will be .

Accepted Answer

A)  metallic 
B)  a liquid at room temperature 
C)  a gas at room temperature 
D)  a solid at room temperature 
E)  nonmetallic 
A)  metallic 
B)  a liquid at room temperature 
C)  a gas at room temperature 
D)  a solid at room temperature 
E)  nonmetallic

Question 7

All of the following are ionic compounds except .

Accepted Answer

A)  NaCl 
B)  Li3N 
C)  Na2SO4  
D)  SiO2  
E)  K2O 
A)  NaCl 
B)  Li3N 
C)  Na2SO4  
D)  SiO2  
E)  K2O

Question 8

Which of the following correctly represents the second ionization of phosphorus?

Accepted Answer

A)  P+ (g) + e- - P (g) 
B)  P (g) -P+ (g) + e- 
C)  P+ (g) + e-  -P2+ (g) 
D)  P-  (g) + e-  -P2-  (g) 
E)  P+ (g) -P2+ (g) + e- 
A)  P+ (g) + e- - P (g) 
B)  P (g) -P+ (g) + e- 
C)  P+ (g) + e-  -P2+ (g) 
D)  P-  (g) + e-  -P2-  (g) 
E)  P+ (g) -P2+ (g) + e-

Question 9

Which one of the following elements has an allotrope that is produced in the upper atmosphere by lightning?

Accepted Answer

A)  He 
B)  N 
C)  S 
D)  Cl 
E)  O 
A)  He 
B)  N 
C)  S 
D)  Cl 
E)  O

Question 10

Of the alkaline earth metals, which two elements are the least reactive?

Accepted Answer

The answer of Of the alkaline earth metals, which two...

Question 11

Which of the following generalizations cannot be made with regard to reactions of alkali metals? (The symbol M represents any one of the alkali metals.)

Accepted Answer

A)  M (s) + O2 (g) - MO2 (s) 
B)  2M (s) + S (s) -M2S (s) 
C)  2M (s) + Cl2 (g) - 2MCl (s) 
D)  2M (s) + 2H2O (l) - 2MOH (aq) + H2 (g) 
E)  2M (s) + H2 (g) - 2MH (s) 
A)  M (s) + O2 (g) - MO2 (s) 
B)  2M (s) + S (s) -M2S (s) 
C)  2M (s) + Cl2 (g) - 2MCl (s) 
D)  2M (s) + 2H2O (l) - 2MOH (aq) + H2 (g) 
E)  2M (s) + H2 (g) - 2MH (s)

Question 12

Most of the elements on the periodic table are .

Accepted Answer

A)  metalloids 
B)  nonmetals 
C)  liquids 
D)  gases 
E)  metals 
A)  metalloids 
B)  nonmetals 
C)  liquids 
D)  gases 
E)  metals

Question 13

Of the elements below, has the largest first ionization energy.

Accepted Answer

A)  Na 
B)  H 
C)  Rb 
D)  K 
E)  Li 
A)  Na 
B)  H 
C)  Rb 
D)  K 
E)  Li

Question 14

An added electron to the element bromine goes into which orbital ?

Accepted Answer

The answer of An added electron to the element bromine...

Question 15

Na reacts with element X to form an ionic compound with the formula Na3X. Ca will react with X to form .

Accepted Answer

A)  Ca3X 
B)  CaX2  
C)  Ca2X3  
D)  Ca3X2  
E)  CaX 
A)  Ca3X 
B)  CaX2  
C)  Ca2X3  
D)  Ca3X2  
E)  CaX

Question 16

Which one of the following atoms has the largest radius?

Accepted Answer

A)  I 
B)  Ca 
C)  Co 
D)  Ba 
E)  Sr 
A)  I 
B)  Ca 
C)  Co 
D)  Ba 
E)  Sr

Question 17

Element M reacts with oxygen to form an oxide with the formula MO. When MO is dissolved in water, the resulting solution is basic. Element M could be _.

Accepted Answer

A)  Na 
B)  S 
C)  N 
D)  Ba 
E)  C 
A)  Na 
B)  S 
C)  N 
D)  Ba 
E)  C

Question 18

Consider the following properties of an element:
(i) It is solid at room temperature.
(ii) It easily forms an oxide when exposed to air.
(iii) When it reacts with water, hydrogen gas evolves.
(iv) It must be stored submerged in oil. Which element fits the above description the best?

Accepted Answer

A)  magnesium 
B)  sodium 
C)  sulfur 
D)  mercury 
E)  copper 
A)  magnesium 
B)  sodium 
C)  sulfur 
D)  mercury 
E)  copper

Question 19

Screening by the valence electrons in atoms is _ .

Accepted Answer

A)  more efficient than that by core electrons 
B)  less efficient than that by core electrons 
C)  responsible for a general increase in atomic radius going across a period 
D)  essentially identical to that by core electrons 
E)  both more efficient than that by core electrons and responsible for a general increase in atomic radius going across a period 
A)  more efficient than that by core electrons 
B)  less efficient than that by core electrons 
C)  responsible for a general increase in atomic radius going across a period 
D)  essentially identical to that by core electrons 
E)  both more efficient than that by core electrons and responsible for a general increase in atomic radius going across a period

Question 20

Which of the following correctly represents the second ionization of aluminum?

Accepted Answer

A)  Al- (g) + e-  -Al2-  (g) 
B)  Al+ (g) + e-  -Al2+ (g) 
C)  Al+ (g) + e- - Al (g) 
D)  Al (g) -Al+ (g) + e- 
E)  Al+ (g) - Al2+ (g) + e- 
A)  Al- (g) + e-  -Al2-  (g) 
B)  Al+ (g) + e-  -Al2+ (g) 
C)  Al+ (g) + e- - Al (g) 
D)  Al (g) -Al+ (g) + e- 
E)  Al+ (g) - Al2+ (g) + e-

Exam 7: Periodic Properties of the Elements

Of the following elements, has the most negative electron affinity.

The atomic radius of main- group elements generally increases down a group because .

Which element is solid at room temperature?

The reaction of a metal with a nonmetal produces a(n) _.

have the lowest first ionization energies of the groups listed.

When two elements combine to form a compound, the greater the difference in metallic character between the two elements, the greater the likelihood that the compound will be .

All of the following are ionic compounds except .

Which of the following correctly represents the second ionization of phosphorus?

Which one of the following elements has an allotrope that is produced in the upper atmosphere by lightning?

Of the alkaline earth metals, which two elements are the least reactive?

Which of the following generalizations cannot be made with regard to reactions of alkali metals? (The symbol M represents any one of the alkali metals.)

Most of the elements on the periodic table are .

Of the elements below, has the largest first ionization energy.

An added electron to the element bromine goes into which orbital ?

Na reacts with element X to form an ionic compound with the formula Na3X. Ca will react with X to form .

Which one of the following atoms has the largest radius?

Element M reacts with oxygen to form an oxide with the formula MO. When MO is dissolved in water, the resulting solution is basic. Element M could be _.

Consider the following properties of an element: (i) It is solid at room temperature. (ii) It easily forms an oxide when exposed to air. (iii) When it reacts with water, hydrogen gas evolves. (iv) It must be stored submerged in oil. Which element fits the above description the best?

Screening by the valence electrons in atoms is _ .

Which of the following correctly represents the second ionization of aluminum?

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Electronic Structure of Atoms

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

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Na reacts with element X to form an ionic compound with the formula Na₃X. Ca will react with X to form .