Question 1

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

Accepted Answer

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

Question 2

Which of these choices 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 A

Question 3

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. A

Question 4

Which element would be expected to have properties similar to calcium?

Accepted Answer

A)  Ba 
B)  K 
C)  Sc 
D)  Na 
E)  Rb 
A)  Ba 
B)  K 
C)  Sc 
D)  Na 
E)  Rb

Question 5

Explain what is meant by a diagonal relationship in the periodic table and give an example.

Accepted Answer

A diagonal relationship refers

Question 6

Consider the element with the electron configuration [Kr]5s24d105p5. This element is

Accepted Answer

A)  a halogen. 
B)  a transition metal. 
C)  an alkali metal. 
D)  an actinide element. 
E)  a noble gas. 
A)  a halogen. 
B)  a transition metal. 
C)  an alkali metal. 
D)  an actinide element. 
E)  a noble gas.

Question 7

Which element in Group 7A has the smallest atomic radius?

Accepted Answer

A)  F 
B)  Cl 
C)  Br 
D)  I 
E)  At 
A)  F 
B)  Cl 
C)  Br 
D)  I 
E)  At

Question 8

Which element would be expected to have properties similar to antimony?

Accepted Answer

A)  Se 
B)  Sn 
C)  P 
D)  As 
E)  Pb 
A)  Se 
B)  Sn 
C)  P 
D)  As 
E)  Pb

Question 9

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 10

Which atom has the smallest atomic radius in the third period of the periodic table?

Accepted Answer

The answer of Which atom has the smallest atomic radius...

Question 11

An element with the electron configuration [noble gas]ns2(n - 1)d10np3 has ________ valence electrons.

Accepted Answer

A)  2 
B)  3 
C)  5 
D)  10 
E)  15 
A)  2 
B)  3 
C)  5 
D)  10 
E)  15

Question 12

Which one of these atoms has the largest effective nuclear charge, Zeff?

Accepted Answer

A)  Na 
B)  K 
C)  Al 
D)  Ar 
E)  F 
A)  Na 
B)  K 
C)  Al 
D)  Ar 
E)  F

Question 13

Which of these elements has the highest first ionization energy?

Accepted Answer

A)  Cs 
B)  Ga 
C)  K 
D)  Bi 
E)  As 
A)  Cs 
B)  Ga 
C)  K 
D)  Bi 
E)  As

Question 14

Which of these choices is the electron configuration for the aluminum ion?

Accepted Answer

A)  1s22s22p63s2 
B)  1s22s22p63s23p2 
C)  1s22s22p63s23p1  
D)  1s22s22p6 
E)  1s22s22p63s23p4 
A)  1s22s22p63s2 
B)  1s22s22p63s23p2 
C)  1s22s22p63s23p1  
D)  1s22s22p6 
E)  1s22s22p63s23p4

Question 15

Which statement below correctly characterizes nonmetals?

Accepted Answer

A)  They have low electron affinities (so they commonly form anions). 
B)  They have low ionization energies (so they commonly form cations). 
C)  They form ionic compounds with chlorine (metal chlorides). 
D)  They form basic, ionic compounds with oxygen (metal oxides). 
E)  They have high electron affinities (so they commonly form anions). 
A)  They have low electron affinities (so they commonly form anions). 
B)  They have low ionization energies (so they commonly form cations). 
C)  They form ionic compounds with chlorine (metal chlorides). 
D)  They form basic, ionic compounds with oxygen (metal oxides). 
E)  They have high electron affinities (so they commonly form anions).

Question 16

Arrange these ions in order of increasing ionic radius: K+ , P3- , S2- , Cl-.

Accepted Answer

A)  K+ - 2- 3- 
B)  K+ 3- 2- - 
C)  P3- 2- - +  
D)  Cl- 2- 3- + 
E)  Cl- 2- + 3- 
A)  K+ - 2- 3- 
B)  K+ 3- 2- - 
C)  P3- 2- - +  
D)  Cl- 2- 3- + 
E)  Cl- 2- + 3-

Question 17

Which one of these elements is a transition element?

Accepted Answer

A)  Sr 
B)  Pb 
C)  As 
D)  Fe 
E)  H 
A)  Sr 
B)  Pb 
C)  As 
D)  Fe 
E)  H

Question 18

What is the correct order of decreasing size of the following ions?

Accepted Answer

A)  P3- > Cl- > K+ > Ca2+ 
B)  Ca2+ > K+ > Cl- > P3- 
C)  K+ > Cl- > Ca2+ > P3-  
D)  K+ > Cl- > P3- > Ca2+ 
E)  None of these relative size statements is correct. 
A)  P3- > Cl- > K+ > Ca2+ 
B)  Ca2+ > K+ > Cl- > P3- 
C)  K+ > Cl- > Ca2+ > P3-  
D)  K+ > Cl- > P3- > Ca2+ 
E)  None of these relative size statements is correct.

Question 19

Which of the following elements has the largest second ionization energy (IE2)?

Accepted Answer

A)  Li 
B)  B 
C)  O 
D)  F 
E)  Na 
A)  Li 
B)  B 
C)  O 
D)  F 
E)  Na

Question 20

Which of the following elements has the smallest first ionization energy?

Accepted Answer

A)  Rb 
B)  Mg 
C)  I 
D)  As 
E)  F 
A)  Rb 
B)  Mg 
C)  I 
D)  As 
E)  F

Exam 7: Electron Configuration and the Periodic Table

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

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

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

Which element would be expected to have properties similar to calcium?

Explain what is meant by a diagonal relationship in the periodic table and give an example.

Consider the element with the electron configuration [Kr]5s24d105p5. This element is

Which element in Group 7A has the smallest atomic radius?

Which element would be expected to have properties similar to antimony?

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

Which atom has the smallest atomic radius in the third period of the periodic table?

An element with the electron configuration [noble gas]ns2(n - 1)d10np3 has ________ valence electrons.

Which one of these atoms has the largest effective nuclear charge, Zeff?

Which of these elements has the highest first ionization energy?

Which of these choices is the electron configuration for the aluminum ion?

Which statement below correctly characterizes nonmetals?

Arrange these ions in order of increasing ionic radius: K+ , P3- , S2- , Cl-.

Which one of these elements is a transition element?

What is the correct order of decreasing size of the following ions?

Which of the following elements has the largest second ionization energy (IE2)?

Which of the following elements has the smallest first ionization energy?

Chemistry: the Central Science

Atoms, Molecules, and Ions

Stoichiometry: Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

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

Environmental Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

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

Consider the element with the electron configuration [Kr]5s²4d¹⁰5p⁵. This element is

An element with the general electron configuration for its outermost electrons of ns²^np¹ would be in which element group?

An element with the electron configuration [noble gas]ns²(n - 1)d¹⁰^np³ has ________ valence electrons.

Which one of these atoms has the largest effective nuclear charge, Z_eff?

Arrange these ions in order of increasing ionic radius: K⁺ , P^3- , S^2- , Cl^-.

Which of the following elements has the largest second ionization energy (IE₂)?