Question 1

The elements in Group 7A are known by what name?

Accepted Answer

A)  transition metals
B)  halogens
C)  alkali metals
D)  alkaline earth metals
E)  noble gasesF) A) and E)
G) D) and E)

Question 2

Consider the following reaction 2A + 3F2  →\rarr→ 2AF3.What is the formula for the reaction product if we substitute iodine for fluorine?

Accepted Answer

A)  A2I3
B)  A3I2
C)  AI3
D)  A3I
E)  AI F) A) and B)
G) C) and E)

Question 3

What are the products of the following reaction? 2Al(s) + 6H+(aq)  →\rarr→

Accepted Answer

A)  2Al3+(aq) + 3H2(g) 
B)  2Al2+(aq) + 3H2(g) 
C)  2AlH2(s) + H2(g) 
D)  2Al+(aq) + 3H2(g) 
E)  2AlH3(s)  F) D) and E)
G) A) and E)

Question 4

What are the products of the following reaction? 2 Li(s) + 2H2O(l)  →\rarr→

Accepted Answer

A)  Li2O2(s) + 2 H2(g) 
B)  2Li2O(s) + 2 H2(g) 
C)  2 LiOH(aq) + H2(g) 
D)  2 Li(s) + 2H2O(l) 
E)  LiO2(s) + 2H2(g)  F) C) and D)
G) B) and E) C

Question 5

For which of the following reactions is the enthalpy change equal to the second ionization energy of nitrogen?

Accepted Answer

A)  N2+(g)  →\rarr→ N3+(g) + e-
B)  N2+(g) + e-  →\rarr→  N+(g) 
C)  N(g)  →\rarr→  N2+(g) + 2e-
D)  N-(g) + e-  →\rarr→  N2-(g) 
E)  N+(g)  →\rarr→ N2+(g) + e- F) A) and B)
G) C) and E) E

Question 6

Which one of the following elements is a Lanthanide?

Accepted Answer

A)  U
B)  Ce
C)  Os
D)  Bi
E)  CsF) C) and E)
G) A) and D)

Question 7

The effective nuclear charge (Zeff) felt by the outermost electrons is the strongest for which of the following elements?

Accepted Answer

A)  B
B)  C
C)  N
D)  O
E)  FF) C) and D)
G) A) and E)

Question 8

Arrange the following ions in order of decreasing ionic radius: Al3+, Mg2+, Na+, O2-. decreasing radius  →\rarr→

Accepted Answer

A)  Al3+ > Mg2+ > O2- > Na+
B)  Al3+ > Mg2+ > Na+ > O2-
C)  Na+ > Mg2+ > Al3+ > O2-
D)  O2- > Al3+ > Mg2+ > Na+
E)  O2- > Na+ > Mg2+ > Al3+ F) C) and D)
G) D) and E)

Question 9

The representative elements are those with unfilled energy levels in which the "last electron" was added to

Accepted Answer

A)  an s orbital.
B)  an s or p orbital.
C)  a d orbital.
D)  a p or d orbital.
E)  an f orbital.F) A) and B)
G) A) and C) B

Question 10

Consider the element with the electron configuration [Xe]6s24f7.This element is

Accepted Answer

A)  a representative element
B)  a lanthanide element
C)  a nonmetal
D)  an actinide element
E)  a noble gasF) A) and B)
G) B) and E)

Question 11

Concerning the electron configuration of aluminum, 1s22s22p63s23p1, which of the following represents the valence electrons only?

Accepted Answer

A)  1s2
B)  1s22s2
C)  1s22s22p6
D)  1s22s22p63s2
E)  3s23p1F) A) and C)
G) All of the above

Question 12

Why is the Mg2+ ion smaller than F-, even though they are isoelectronic?

Accepted Answer

Mg²⁺ has a h...

Question 13

Which of the following elements has the greatest metallic character?

Accepted Answer

A)  Br
B)  Se
C)  Ni
D)  As
E)  SiF) B) and E)
G) A) and D)

Question 14

How many valence electrons does S2- have?

Accepted Answer

A)  2
B)  4
C)  6
D)  16
E)  8F) A) and B)
G) A) and E)

Question 15

Which of the following elements has the greatest electron affinity (largest positive value) ?

Accepted Answer

A)  Mg
B)  Al
C)  Si
D)  P
E)  SF) A) and B)
G) C) and E)

Question 16

Which one of the following is not isoelectronic with Kr?

Accepted Answer

A)  As3+
B)  Se2-
C)  Rb+
D)  Sr2+
E)  Br-F) None of the above
G) A) and B)

Question 17

How many 3d electrons does the manganese(II) ion, Mn2+, have?

Accepted Answer

A)  3
B)  4
C)  5
D)  6
E)  7F) A) and B)
G) A) and C)

Question 18

The radii of ions are always smaller than the radii of the corresponding atoms of the same element.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following atoms has the greatest electron affinity (largest positive value) ?

Accepted Answer

A)  S
B)  P
C)  Ga
D)  Li
E)  BrF) A) and B)
G) A) and C)

Question 20

Which of the following is the electron configuration of the iron(III) ion?

Accepted Answer

A)  [Ar]3d5
B)  [Ar]4s13d5
C)  [Ar]4s23d3
D)  [Ar]3d6
E)  [Ar]4s23d9F) A) and B)
G) B) and D)

Exam 8: Periodic Relationships Among the Elements

The elements in Group 7A are known by what name?

Correct AnswerverifiedShow Answer

Consider the following reaction 2A + 3F2 →\rarr→ 2AF3.What is the formula for the reaction product if we substitute iodine for fluorine?

Correct AnswerverifiedShow Answer

What are the products of the following reaction? 2Al(s) + 6H+(aq) →\rarr→

Correct AnswerverifiedShow Answer

What are the products of the following reaction? 2 Li(s) + 2H2O(l) →\rarr→

Correct AnswerverifiedC

For which of the following reactions is the enthalpy change equal to the second ionization energy of nitrogen?

Correct AnswerverifiedE

Which one of the following elements is a Lanthanide?

Correct AnswerverifiedShow Answer

The effective nuclear charge (Zeff) felt by the outermost electrons is the strongest for which of the following elements?

Correct AnswerverifiedShow Answer

Arrange the following ions in order of decreasing ionic radius: Al3+, Mg2+, Na+, O2-. decreasing radius →\rarr→

Correct AnswerverifiedShow Answer

The representative elements are those with unfilled energy levels in which the "last electron" was added to

Correct AnswerverifiedB

Consider the element with the electron configuration [Xe]6s24f7.This element is

Correct AnswerverifiedShow Answer

Concerning the electron configuration of aluminum, 1s22s22p63s23p1, which of the following represents the valence electrons only?

Correct AnswerverifiedShow Answer

Why is the Mg2+ ion smaller than F-, even though they are isoelectronic?

Correct AnswerverifiedMg2+ has a h...View AnswerShow Answer

Which of the following elements has the greatest metallic character?

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How many valence electrons does S2- have?

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Which of the following elements has the greatest electron affinity (largest positive value) ?

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Which one of the following is not isoelectronic with Kr?

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How many 3d electrons does the manganese(II) ion, Mn2+, have?

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The radii of ions are always smaller than the radii of the corresponding atoms of the same element.

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Which of the following atoms has the greatest electron affinity (largest positive value) ?

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Which of the following is the electron configuration of the iron(III) ion?

Correct AnswerverifiedShow Answer

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Consider the following reaction 2A + 3F₂ $\rarr$ 2AF₃.What is the formula for the reaction product if we substitute iodine for fluorine?

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What are the products of the following reaction? 2Al(s) + 6H⁺(aq) $\rarr$

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What are the products of the following reaction? 2 Li(s) + 2H₂O(l) $\rarr$

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C

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E

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The effective nuclear charge (Z_eff) felt by the outermost electrons is the strongest for which of the following elements?

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Arrange the following ions in order of decreasing ionic radius: Al³⁺, Mg²⁺, Na⁺, O^2-. decreasing radius $\rarr$

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B

Consider the element with the electron configuration [Xe]6s²4f⁷.This element is

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Concerning the electron configuration of aluminum, 1s²2s²2p⁶3s²3p¹, which of the following represents the valence electrons only?

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Why is the Mg²⁺ ion smaller than F^-, even though they are isoelectronic?

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Mg²⁺ has a h...
View Answer

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How many valence electrons does S^2- have?

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How many 3d electrons does the manganese(II) ion, Mn²⁺, have?

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