Question 1

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- 
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- E

Question 2

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) 
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) C

Question 3

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

Question 4

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

Accepted Answer

A) 3 
B) 4 
C) 5 
D) 6 
E) 7 
A) 3 
B) 4 
C) 5 
D) 6 
E) 7

Question 5

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

Accepted Answer

Mg²⁺ has a h

Question 6

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]4s23d9 
A) [Ar]3d5 
B) [Ar]4s13d5 
C) [Ar]4s23d3 
D) [Ar]3d6 
E) [Ar]4s23d9

Question 7

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

Accepted Answer

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

Question 8

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

Accepted Answer

A) S 
B) P 
C) Ga 
D) Li 
E) Br 
A) S 
B) P 
C) Ga 
D) Li 
E) Br

Question 9

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 
A) A2I3 
B) A3I2 
C) AI3 
D) A3I 
E) AI

Question 10

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 11

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 gases 
A) transition metals 
B) halogens 
C) alkali metals 
D) alkaline earth metals 
E) noble gases

Question 12

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

Question 13

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 14

Which one of the following elements is a Lanthanide?

Accepted Answer

A) U 
B) Ce 
C) Os 
D) Bi 
E) Cs 
A) U 
B) Ce 
C) Os 
D) Bi 
E) Cs

Question 15

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 16

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) 3s23p1 
A) 1s2 
B) 1s22s2 
C) 1s22s22p6 
D) 1s22s22p63s2 
E) 3s23p1

Question 17

Which of the following elements has the greatest metallic character?

Accepted Answer

A) Br 
B) Se 
C) Ni 
D) As 
E) Si 
A) Br 
B) Se 
C) Ni 
D) As 
E) Si

Question 18

How many valence electrons does S2- have?

Accepted Answer

A) 2 
B) 4 
C) 6 
D) 16 
E) 8 
A) 2 
B) 4 
C) 6 
D) 16 
E) 8

Question 19

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) F 
A) B 
B) C 
C) N 
D) O 
E) F

Question 20

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+ 
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+

Exam 8: Periodic Relationships Among the Elements

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

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

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

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

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

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

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

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

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

Which one of the following is not isoelectronic with Kr?

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

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

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

Which one of the following elements is a Lanthanide?

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

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

Which of the following elements has the greatest metallic character?

How many valence electrons does S2- have?

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

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

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

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

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

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

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

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

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

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

How many valence electrons does S^2- have?

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

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