Question 1

Explain how the elements in Group 4A differ from one another.

Accepted Answer

C IS A NONMETAL; SI

Question 2

Which one of these ions has the smallest radius?

Accepted Answer

A)  Cl- 
B)  K+ 
C)  S2- 
D)  Na+ 
E)  O2- 
A)  Cl- 
B)  K+ 
C)  S2- 
D)  Na+ 
E)  O2-

Question 3

Which of these elements exhibits chemical behavior similar to that of oxygen?

Accepted Answer

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

Question 4

Consider the element with the electron configuration [Kr]5s24d7. This element is

Accepted Answer

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

Question 5

Which one of these ions does not have [Xe] as its electronic configuration?

Accepted Answer

A)  Te2- 
B)  I- 
C)  Cs+ 
D)  Ba2+ 
E)  Sn4+ 
A)  Te2- 
B)  I- 
C)  Cs+ 
D)  Ba2+ 
E)  Sn4+

Question 6

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

Accepted Answer

A)  Na 
B)  Cl 
C)  Ca 
D)  Te 
E)  Br 
A)  Na 
B)  Cl 
C)  Ca 
D)  Te 
E)  Br

Question 7

Coulomb's law is the attractive force (F) between two oppositely charged particles (Q1 and Q2). It is directly proportional to the product of the charges and inversely proportional to the distance (d) between the objects cubed.

Accepted Answer

A) True 
 B)False

Question 8

Select the element with the most negative electron affinity (i.e., accepts an electron most readily).

Accepted Answer

A)  H 
B)  Li 
C)  C 
D)  F 
E)  Ne 
A)  H 
B)  Li 
C)  C 
D)  F 
E)  Ne

Question 9

The general electron configuration for noble gas atoms is

Accepted Answer

A)  ns2np6. 
B)  ns2np5. 
C)  ns2np4. 
D)  ns2np3. 
E)  ns2. 
A)  ns2np6. 
B)  ns2np5. 
C)  ns2np4. 
D)  ns2np3. 
E)  ns2.

Question 10

Which of these elements has the greatest electron affinity?

Accepted Answer

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

Question 11

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 12

Which of these atoms has the largest radius?

Accepted Answer

A)  B 
B)  Ga 
C)  Br 
D)  Si 
E)  Cl 
A)  B 
B)  Ga 
C)  Br 
D)  Si 
E)  Cl

Question 13

A magnesium ion, Mg2+, has

Accepted Answer

A)  12 protons and 13 electrons. 
B)  24 protons and 26 electrons. 
C)  12 protons and 10 electrons. 
D)  24 protons and 22 electrons. 
E)  12 protons and 14 electrons. 
A)  12 protons and 13 electrons. 
B)  24 protons and 26 electrons. 
C)  12 protons and 10 electrons. 
D)  24 protons and 22 electrons. 
E)  12 protons and 14 electrons.

Question 14

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

Accepted Answer

A)  F 
B)  Cl 
C)  H 
D)  Br 
E)  Kr 
A)  F 
B)  Cl 
C)  H 
D)  Br 
E)  Kr

Question 15

Rank the following elements in order of decreasing atomic radii: Br, Fr, Ca, Ba and As.

Accepted Answer

A)  Fr > Ba > Ca > As > Br 
B)  Br > As > Ca > Ba > Fr 
C)  Fr > As > Br > Ba > Ca 
D)  Fr > Ba > As > Br > Ca 
E)  Ca > Ba > Fr > Br > As 
A)  Fr > Ba > Ca > As > Br 
B)  Br > As > Ca > Ba > Fr 
C)  Fr > As > Br > Ba > Ca 
D)  Fr > Ba > As > Br > Ca 
E)  Ca > Ba > Fr > Br > As

Question 16

The electron configuration of atomic argon is the same as the chloride ion (Cl-).

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is an amphoteric oxide?

Accepted Answer

A)  Na2O 
B)  MgO 
C)  Al2O3 
D)  SO2 
E)  Cl2O7 
A)  Na2O 
B)  MgO 
C)  Al2O3 
D)  SO2 
E)  Cl2O7

Question 18

Which of these elements exhibits chemical behavior similar to that of potassium?

Accepted Answer

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

Question 19

Which one of the following equations correctly represents the process relating to the ionization energy of X?

Accepted Answer

A)  X(s) → X+(g) + e- 
B)  X2(g) → X+(g) + X-(g) 
C)  X(g) + e- → X-(g) 
D)  X-(g) → X(g) + e- 
E)  X(g) → X+(g) + e- 
A)  X(s) → X+(g) + e- 
B)  X2(g) → X+(g) + X-(g) 
C)  X(g) + e- → X-(g) 
D)  X-(g) → X(g) + e- 
E)  X(g) → X+(g) + e-

Question 20

Which two electron configurations represent elements that would have similar chemical properties? (1) 1s22s22p4, (2) 1s22s22p5, (3) [Ar]4s23d104p3, (4) [Ar]4s23d104p4

Accepted Answer

A)  (1) and (2) 
B)  (1) and (3) 
C)  (1) and (4) 
D)  (2) and (4) 
E)  (2) and (3) 
A)  (1) and (2) 
B)  (1) and (3) 
C)  (1) and (4) 
D)  (2) and (4) 
E)  (2) and (3)

Exam 7: Electron Configuration and the Periodic Table

Explain how the elements in Group 4A differ from one another.

Which one of these ions has the smallest radius?

Which of these elements exhibits chemical behavior similar to that of oxygen?

Consider the element with the electron configuration [Kr]5s24d7. This element is

Which one of these ions does not have [Xe] as its electronic configuration?

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

Coulomb's law is the attractive force (F) between two oppositely charged particles (Q1 and Q2). It is directly proportional to the product of the charges and inversely proportional to the distance (d) between the objects cubed.

Select the element with the most negative electron affinity (i.e., accepts an electron most readily).

The general electron configuration for noble gas atoms is

Which of these elements has the greatest electron affinity?

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

Which of these atoms has the largest radius?

A magnesium ion, Mg2+, has

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

Rank the following elements in order of decreasing atomic radii: Br, Fr, Ca, Ba and As.

The electron configuration of atomic argon is the same as the chloride ion (Cl-).

Which of the following is an amphoteric oxide?

Which of these elements exhibits chemical behavior similar to that of potassium?

Which one of the following equations correctly represents the process relating to the ionization energy of X?

Which two electron configurations represent elements that would have similar chemical properties? (1) 1s22s22p4, (2) 1s22s22p5, (3) [Ar]4s23d104p3, (4) [Ar]4s23d104p4

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 [Kr]5s²4d⁷. This element is

Coulomb's law is the attractive force (F) between two oppositely charged particles (Q₁ and Q₂). It is directly proportional to the product of the charges and inversely proportional to the distance (d) between the objects cubed.

A magnesium ion, Mg²⁺, has

The electron configuration of atomic argon is the same as the chloride ion (Cl^-).

Which two electron configurations represent elements that would have similar chemical properties? (1) 1s²2s²2p⁴, (2) 1s²2s²2p⁵, (3) [Ar]4s²3d¹⁰4p³, (4) [Ar]4s²3d¹⁰4p⁴