Question 1

Which one of the following elements forms a stable 3- anion?

Accepted Answer

A) P 
B) S 
C) Cl 
D) Al 
E) Mg 
A) P 
B) S 
C) Cl 
D) Al 
E) Mg

Question 2

The first ionization energy of mercury is 1006 kJ/mol.The energy change for the reaction Hg(l)$\rarr$ Hg+(g)+ e- is therefore

Accepted Answer

A) 1006 kJ/mol. 
B) greater than 1006 kJ/mol. 
C) less than 1006 kJ/mol. 
D) is equal to the electron affinity of mercury. 
E) is equal to the second ionization energy of mercury. 
A) 1006 kJ/mol. 
B) greater than 1006 kJ/mol. 
C) less than 1006 kJ/mol. 
D) is equal to the electron affinity of mercury. 
E) is equal to the second ionization energy of mercury.

Question 3

Concerning the electron configuration of fluorine, 1s22s22p5 which of the following represents the core electrons only?

Accepted Answer

A) 1s2 
B) 1s22s2 
C) 1s22s22p5 
D) 2s22p5 
E) 2p5 
A) 1s2 
B) 1s22s2 
C) 1s22s22p5 
D) 2s22p5 
E) 2p5

Question 4

Consider the following reaction: 3Li + Z $\rarr$ Li3Z.What is a reasonable guess for the identity of element Z?

Accepted Answer

Nitrogen, or other e

Question 5

Write the products of the following reaction:
H2(g)+ Cl2(g)$\rarr$

Accepted Answer

Question 6

The following successive ionization energies correspond to an element in the third row of the periodic table: I1 = 786.3 kJ/mol, I2 =1,580 kJ/mol, I3= 3,230 kJ/mol, I4 = 4,360 kJ/mol, I5 = 16,000, and I6 = 20,000 kJ/mol.Based on this pattern of ionization energies, identify the element.

Accepted Answer

Question 7

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 8

For Mg atoms a very large jump in the magnitudes of the ionization energies will occur between the second and the third ionization energies.

Accepted Answer

A) True 
 B)False

Question 9

Which of the elements listed below has the highest first ionization energy?

Accepted Answer

A) C 
B) Ge 
C) P 
D) O 
E) Se 
A) C 
B) Ge 
C) P 
D) O 
E) Se

Question 10

Write the ground-state electron configuration for O2-.

Accepted Answer

Question 11

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

Accepted Answer

A) nitrogen 
B) neon 
C) sulfur 
D) chlorine 
E) fluorine 
A) nitrogen 
B) neon 
C) sulfur 
D) chlorine 
E) fluorine

Question 12

Which of the atoms listed below has the largest radius?

Accepted Answer

A) Cl 
B) I 
C) P 
D) Sb 
E) Se 
A) Cl 
B) I 
C) P 
D) Sb 
E) Se

Question 13

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) 8A 
A) 2A 
B) 3A 
C) 4A 
D) 5A 
E) 8A

Question 14

Why do the group 5A elements have relatively small electron affinities compared to the neighboring nonmetals in the corresponding rows?

Accepted Answer

Because the np orbitals are ha

Question 15

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. 
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.

Question 16

Which of the following is an acidic oxide?

Accepted Answer

A) P4O10 
B) MgO 
C) Fe2O3 
D) K2O 
E) Cr2O3 
A) P4O10 
B) MgO 
C) Fe2O3 
D) K2O 
E) Cr2O3

Question 17

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

Question 18

Which of the following elements has the greatest metallic character?

Accepted Answer

A) Ca 
B) Mg 
C) Ba 
D) As 
E) Se 
A) Ca 
B) Mg 
C) Ba 
D) As 
E) Se

Question 19

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

Accepted Answer

A) A2S3 
B) A3S2 
C) AS3 
D) A3S 
E) AS 
A) A2S3 
B) A3S2 
C) AS3 
D) A3S 
E) AS

Question 20

Which one of the following elements forms a stable 1- anion?

Accepted Answer

A) K 
B) Be 
C) Al 
D) O 
E) I 
A) K 
B) Be 
C) Al 
D) O 
E) I

Exam 8: Periodic Relationships Among the Elements

Which one of the following elements forms a stable 3- anion?

The first ionization energy of mercury is 1006 kJ/mol.The energy change for the reaction Hg(l) →\rarr→ Hg+(g)+ e- is therefore

Concerning the electron configuration of fluorine, 1s22s22p5 which of the following represents the core electrons only?

Consider the following reaction: 3Li + Z →\rarr→ Li3Z.What is a reasonable guess for the identity of element Z?

Write the products of the following reaction: H2(g)+ Cl2(g) →\rarr→

The following successive ionization energies correspond to an element in the third row of the periodic table: I1 = 786.3 kJ/mol, I2 =1,580 kJ/mol, I3= 3,230 kJ/mol, I4 = 4,360 kJ/mol, I5 = 16,000, and I6 = 20,000 kJ/mol.Based on this pattern of ionization energies, identify the element.

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

For Mg atoms a very large jump in the magnitudes of the ionization energies will occur between the second and the third ionization energies.

Which of the elements listed below has the highest first ionization energy?

Write the ground-state electron configuration for O2-.

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

Which of the atoms listed below has the largest radius?

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

Why do the group 5A elements have relatively small electron affinities compared to the neighboring nonmetals in the corresponding rows?

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

Which of the following is an acidic oxide?

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

Which of the following elements has the greatest metallic character?

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

Which one of the following elements forms a stable 1- anion?

Chemistry: the Study of Change

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Gases

Thermochemistry

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

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

The first ionization energy of mercury is 1006 kJ/mol.The energy change for the reaction Hg(l) $\rarr$ Hg⁺(g)+ e^- is therefore

Concerning the electron configuration of fluorine, 1s²2s²2p⁵ which of the following represents the core electrons only?

Consider the following reaction: 3Li + Z $\rarr$ Li₃Z.What is a reasonable guess for the identity of element Z?

Write the products of the following reaction: H₂(g)+ Cl₂(g) $\rarr$

The following successive ionization energies correspond to an element in the third row of the periodic table: I₁= 786.3 kJ/mol, I₂=1,580 kJ/mol, I₃= 3,230 kJ/mol, I₄ = 4,360 kJ/mol, I₅ = 16,000, and I₆ = 20,000 kJ/mol.Based on this pattern of ionization energies, identify the element.

Write the ground-state electron configuration for O^2-.

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

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

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

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