Question 1

Which pair of elements from different groups resemble each other the most in their chemical properties?

Accepted Answer

A) Be and B 
B) Al and Si 
C) Li and Be 
D) Al and Be 
E) Be and C 
A) Be and B 
B) Al and Si 
C) Li and Be 
D) Al and Be 
E) Be and C

Question 2

Which of the following elements has the greatest metallic character?

Accepted Answer

A) Br 
B) F 
C) Ge 
D) Mn 
E) Sc 
A) Br 
B) F 
C) Ge 
D) Mn 
E) Sc

Question 3

How many valence electrons does an oxygen atom have?

Accepted Answer

A) 2 
B) 4 
C) 6 
D) 7 
E) 8 
A) 2 
B) 4 
C) 6 
D) 7 
E) 8

Question 4

Which ion is isoelectronic with Ar?

Accepted Answer

A) Fe2+ 
B) F- 
C) Br- 
D) Ga3+ 
E) Ca2+ 
A) Fe2+ 
B) F- 
C) Br- 
D) Ga3+ 
E) Ca2+

Question 5

The successive ionization energies of a certain element are I1 = 589.5 kJ/mol, I2 =1145 kJ/mol, I3= 4900 kJ/mol, I4 = 6500 kJ/mol, and I5 = 8100 kJ/mol. This pattern of ionization energies suggests that the unknown element is

Accepted Answer

A) K 
B) Si 
C) As 
D) Ca 
E) S 
A) K 
B) Si 
C) As 
D) Ca 
E) S

Question 6

Which of the following elements behaves chemically similarly to calcium?

Accepted Answer

A) magnesium 
B) sodium 
C) sulfur 
D) chlorine 
E) iron 
A) magnesium 
B) sodium 
C) sulfur 
D) chlorine 
E) iron

Question 7

Write the ground-state electron configuration for Ca2+.

Accepted Answer

Question 8

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

Accepted Answer

A) K 
B) Br 
C) As 
D) Ar 
E) I 
A) K 
B) Br 
C) As 
D) Ar 
E) I

Question 9

Write the ground-state electron configuration for Cr3+.

Accepted Answer

Question 10

In a surprisingly large number of their properties, beryllium resembles aluminum and boron resembles silicon. Such a relationship is called

Accepted Answer

A) amphoterism. 
B) an allotropic relationship. 
C) a diagonal relationship. 
D) the periodic law. 
E) an isoelectronic series. 
A) amphoterism. 
B) an allotropic relationship. 
C) a diagonal relationship. 
D) the periodic law. 
E) an isoelectronic series.

Question 11

Mendeleev proposed the existence of an unknown element that he called eka-aluminum.This element is now called

Accepted Answer

A) gallium. 
B) silicon. 
C) magnesium. 
D) boron. 
E) germanium. 
A) gallium. 
B) silicon. 
C) magnesium. 
D) boron. 
E) germanium.

Question 12

Which of the following is the electron configuration for the bromide ion?

Accepted Answer

A) [Ar] 
B) [Ar]4s23d104p7 
C) [Kr] 
D) [Kr]5s24d105p7 
E) [Xe] 
A) [Ar] 
B) [Ar]4s23d104p7 
C) [Kr] 
D) [Kr]5s24d105p7 
E) [Xe]

Question 13

Which one of the following elements is a transition element?

Accepted Answer

A) antimony 
B) barium 
C) chromium 
D) potassium 
E) selenium 
A) antimony 
B) barium 
C) chromium 
D) potassium 
E) selenium

Question 14

The general electron configuration for atoms of the halogen group is

Accepted Answer

A) ns2np6 
B) ns2np5 
C) ns2np6(n -1)d7 
D) ns1 
E) ns2np7 
A) ns2np6 
B) ns2np5 
C) ns2np6(n -1)d7 
D) ns1 
E) ns2np7

Question 15

Which of the following is a basic oxide?

Accepted Answer

A) CO2 
B) CaO 
C) SO2 
D) H2O 
E) NO2 
A) CO2 
B) CaO 
C) SO2 
D) H2O 
E) NO2

Question 16

How many valence electrons does a tin (Sn)atom have?

Accepted Answer

A) 2 
B) 4 
C) 14 
D) 36 
E) 50 
A) 2 
B) 4 
C) 14 
D) 36 
E) 50

Question 17

Which one of the following is not isoelectronic with Kr?

Accepted Answer

A) As3+ 
B) Se2- 
C) Rb+ 
D) Sr2+ 
E) Br- 
A) As3+ 
B) Se2- 
C) Rb+ 
D) Sr2+ 
E) Br-

Question 18

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 gas 
A) a representative element 
B) a lanthanide element 
C) a nonmetal 
D) an actinide element 
E) a noble gas

Question 19

Since arsenic is a nonmetal, As2O3 is expected to be a/an _____ oxide.

Accepted Answer

A) acidic 
B) ionic 
C) amphoteric 
D) neutral 
E) basic 
A) acidic 
B) ionic 
C) amphoteric 
D) neutral 
E) basic

Question 20

Consider the following reaction: 3Li + Z $\rarr$ Li3Z.What is the formula for the compound if we substitute magnesium for lithium?

Accepted Answer

A) MgZ 
B) Mg2Z 
C) MgZ2 
D) Mg3Z 
E) Mg3Z2 
A) MgZ 
B) Mg2Z 
C) MgZ2 
D) Mg3Z 
E) Mg3Z2

Exam 8: Periodic Relationships Among the Elements

Which pair of elements from different groups resemble each other the most in their chemical properties?

Which of the following elements has the greatest metallic character?

How many valence electrons does an oxygen atom have?

Which ion is isoelectronic with Ar?

The successive ionization energies of a certain element are I1 = 589.5 kJ/mol, I2 =1145 kJ/mol, I3= 4900 kJ/mol, I4 = 6500 kJ/mol, and I5 = 8100 kJ/mol. This pattern of ionization energies suggests that the unknown element is

Which of the following elements behaves chemically similarly to calcium?

Write the ground-state electron configuration for Ca2+.

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

Write the ground-state electron configuration for Cr3+.

In a surprisingly large number of their properties, beryllium resembles aluminum and boron resembles silicon. Such a relationship is called

Mendeleev proposed the existence of an unknown element that he called eka-aluminum.This element is now called

Which of the following is the electron configuration for the bromide ion?

Which one of the following elements is a transition element?

The general electron configuration for atoms of the halogen group is

Which of the following is a basic oxide?

How many valence electrons does a tin (Sn)atom have?

Which one of the following is not isoelectronic with Kr?

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

Since arsenic is a nonmetal, As2O3 is expected to be a/an _____ oxide.

Consider the following reaction: 3Li + Z →\rarr→ Li3Z.What is the formula for the compound if we substitute magnesium for lithium?

Chemistry: The Study of Change

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solution

Gases

Thermo-Chemistry

Quantum Theory and the Electronic Structure of Atoms

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Chemistry in the Atmosphere

Entropy, Free Energy, and Equilibrium

Electrochemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Nuclear Chemistry

Organic Chemistry

Synthetic and Natural Organic Polymers

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The successive ionization energies of a certain element are I₁= 589.5 kJ/mol, I₂=1145 kJ/mol, I₃= 4900 kJ/mol, I₄ = 6500 kJ/mol, and I₅ = 8100 kJ/mol. This pattern of ionization energies suggests that the unknown element is

Write the ground-state electron configuration for Ca²⁺.

Write the ground-state electron configuration for Cr³⁺.

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

Since arsenic is a nonmetal, As₂O₃ is expected to be a/an _____ oxide.

Consider the following reaction: 3Li + Z $\rarr$ Li₃Z.What is the formula for the compound if we substitute magnesium for lithium?