Question 1

The alkali metal elements are found in _______ of the periodic table.

Accepted Answer

A)   Group 1A
B)   Group 2A
C)   Group 3A
D)   Period 7
E)   Period 1F) B) and E)
G) A) and B)

Question 2

Write the products of the following reaction: CO2(g)  + H2O(l)   →\rarr→

Accepted Answer

A)   H2CO3(aq) 
B)   HCO2 (aq)  + OH-(aq) 
C)   HCO (aq)  + H+(aq)  + CO2(g) 
D)   CO2(g)  + H2O(l) 
E)   None of the above F) A) and B)
G) C) and D)

Question 3

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 D)
G) A) and C)

Question 4

Which one of the following is not isoelectronic with the others: Br-, Rb+, Se2-, Sr2+, Te2-

Accepted Answer

A)   Br-
B)   Rb+
C)   Se2-
D)   Sr2+
E)   Te2-F) A) and C)
G) B) and E)

Question 5

In general the effective nuclear charge felt by the outermost electrons of an element increases when moving across a period.

Accepted Answer

A) True 
 B)False

Question 6

How many 3d electrons does an Fe3+ ion have

Accepted Answer

A)   9
B)   6
C)   5
D)   4
E)   3F) A) and D)
G) C) and D)

Question 7

The group 5A elements have relatively small electron affinities compared to the neighboring nonmetals in the corresponding rows.

Accepted Answer

A) True 
 B)False

Question 8

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 B)
G) A) and C)

Question 9

Which, if any, is the ground-state electron configuration for Br-

Accepted Answer

A)   [Kr] or 1s22s22p63s23p64s23d10
B)   [Kr] or 1s22s22p63s23p64s24p6
C)   [Kr] or 1s22s22p63s23p64s23d104p4
D)   [Kr] or 1s22s22p63s23p64s23d104p6
E)   None of the aboveF) A) and E)
G) None of the above

Question 10

An element with the general electron configuration for its outermost electrons of ns2np1 would be in which element group

Accepted Answer

A)   2A
B)   3A
C)   4A
D)   5A
E)   8AF) B) and E)
G) A) and C)

Question 11

What are the products of the following reaction
CaH2(s)  + 2H2O(l)   →\rarr→

Accepted Answer

A)   Ca2+(aq)  + 3H2(g)  + O2(g) 
B)   2CaOH(s)  + H2(g) 
C)   CaO(s)  + 3H2(g) 
D)   Ca(OH) 2(s)  + 2H2(g) 
E)   CaO(s)  + 6H+(aq)  F) B) and E)
G) D) and E)

Question 12

The electron configuration of a copper(I)  ion is

Accepted Answer

A)   [Ar]4s23d8.
B)   [Ar]4s13d9.
C)   [Ar]3d10.
D)   [Ar]4s23d64p2.
E)   [Kr].F) A) and D)
G) A) and B)

Question 13

Which of the following elements is found as a monatomic species in its most stable form

Accepted Answer

A)   sulfur
B)   oxygen
C)   hydrogen
D)   argon
E)   phosphorusF) B) and D)
G) B) and C)

Question 14

Which, if any, is the ground-state electron configuration for S2-

Accepted Answer

A)   [Ne] or 1s22s22p63s23p6
B)   [Ar] or 1s22s22p63s23p6
C)   1s22s22p63s23p5
D)   [Ar] or 1s22s22p63s23p4
E)   None of the aboveF) A) and B)
G) B) and D)

Question 15

The elements in Group 2A are known by what name

Accepted Answer

A)   transition metals
B)   halogens
C)   alkali metals
D)   alkaline earth metals
E)   noble gasesF) None of the above
G) B) and C)

Question 16

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 17

Amphoteric oxides exhibit both acidic and basic properties.

Accepted Answer

A) True 
 B)False

Question 18

Which, if any, is the ground-state electron configuration for Mg2+

Accepted Answer

A)   [Ne] or 1s22s22p6
B)   [Ar] or 1s22s22p6
C)   1s22s22p63s2
D)   [Ne]3s23p2 or 1s22s22p63s23p2
E)   None of the aboveF) B) and C)
G) D) and E)

Question 19

The first ionization energy of sodium is 495.9 kJ/mol. The energy change for the reaction Na(s)   →\rarr→ Na+(g)  + e- is therefore

Accepted Answer

A)   495.9 kJ/mol.
B)   less than 495.9 kJ/mol.
C)   greater than 495.9 kJ/mol.
D)   is equal to the electron affinity of sodium.
E)   is equal to the second ionization energy of sodium. F) A) and B)
G) A) and C)

Question 20

Which of the following elements behaves chemically similarly to potassium

Accepted Answer

A)   magnesium
B)   sodium
C)   beryllium
D)   chlorine
E)   ironF) B) and D)
G) All of the above

Exam 8: Periodic Relationships Among the Elements

Amphoteric oxides exhibit both acidic and basic properties.

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The group 5A elements have relatively small electron affinities compared to the neighboring nonmetals in the corresponding rows.

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The first ionization energy of sodium is 495.9 kJ/mol. The energy change for the reaction Na(s) →\rarr→ Na+(g) + e- is therefore

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Which of the following elements behaves chemically similarly to potassium

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How many 3d electrons does an Fe3+ ion have

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An element with the general electron configuration for its outermost electrons of ns2np1 would be in which element group

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Which of the following elements is found as a monatomic species in its most stable form

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Which, if any, is the ground-state electron configuration for Mg2+

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Write the products of the following reaction: CO2(g) + H2O(l) →\rarr→

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Which, if any, is the ground-state electron configuration for Br-

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In general the effective nuclear charge felt by the outermost electrons of an element increases when moving across a period.

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The elements in Group 2A are known by what name

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The alkali metal elements are found in _______ of the periodic table.

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Which one of the following is not isoelectronic with the others: Br-, Rb+, Se2-, Sr2+, Te2-

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Which, if any, is the ground-state electron configuration for S2-

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What are the products of the following reaction CaH2(s) + 2H2O(l) →\rarr→

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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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The elements in Group 7A are known by what name

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

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The electron configuration of a copper(I) ion is

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The first ionization energy of sodium is 495.9 kJ/mol. The energy change for the reaction Na(s) $\rarr$ Na⁺(g) + e^- is therefore

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How many 3d electrons does an Fe³⁺ ion have

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An element with the general electron configuration for its outermost electrons of ns²np¹ would be in which element group

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Which, if any, is the ground-state electron configuration for Mg²⁺

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Write the products of the following reaction: CO₂(g) + H₂O(l) $\rarr$

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Which, if any, is the ground-state electron configuration for Br^-

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Which one of the following is not isoelectronic with the others: Br^-, Rb⁺, Se^2-, Sr²⁺, Te^2-

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Which, if any, is the ground-state electron configuration for S^2-

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What are the products of the following reaction CaH₂(s) + 2H₂O(l) $\rarr$

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

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