Question 1

The acidity of oxides of main group elements increases down a group, from top to bottom.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following elements has the lowest electronegativity?

Accepted Answer

A) Al 
B) S 
C) Mg 
D) In 
E) Ba 
A) Al 
B) S 
C) Mg 
D) In 
E) Ba

Question 3

Predict the products for the following set of reactants. Bi(s) + Cl2(g) →

Accepted Answer

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

Question 4

In the gas phase, AlCl3 exists as molecules of Al2Cl6.

Accepted Answer

A) True 
 B)False

Question 5

Group 1A elements are less reactive than group 2A elements.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following formulas does not represent a stable compound?

Accepted Answer

A) N 2O 
B) NO 
C) NO 2 
D) NO 3 
E) N 2O 4 
A) N 2O 
B) NO 
C) NO 2 
D) NO 3 
E) N 2O 4

Question 7

Which of the alkali metals has the highest melting point?

Accepted Answer

A) Li 
B) Na 
C) K 
D) Rb 
E) Cs 
A) Li 
B) Na 
C) K 
D) Rb 
E) Cs

Question 8

Predict the products for the following set of reactants. K2O(s) + H2O(l) →

Accepted Answer

A) K +( aq)+ OH −( aq)+ H 2( g) 
B) K +( aq)+ OH −( aq) 
C) K +( aq)+ H 2( g)+ O 2( g) 
D) KH( s)+ O 2( g) 
E) K +( aq)+ OH −( aq)+ H 2O 2( aq) 
A) K +( aq)+ OH −( aq)+ H 2( g) 
B) K +( aq)+ OH −( aq) 
C) K +( aq)+ H 2( g)+ O 2( g) 
D) KH( s)+ O 2( g) 
E) K +( aq)+ OH −( aq)+ H 2O 2( aq)

Question 9

The acidity of oxides of main group elements increases across a period from left to right.

Accepted Answer

A) True 
 B)False

Question 10

Predict the products for the reaction of the following set of reactants. (CH3)3Ga(g) + AsH3(g) →

Accepted Answer

A) (CH 3)3As( g)+ GaH 3( g) 
B) CH 4( g)+ GaAs( s) 
C) CH 3CH 3( g)+ GaAs( s) 
D) CH 4( g)+ H 2GaAs( s) 
E) CH 3H( g)+ GaAs( s) 
A) (CH 3)3As( g)+ GaH 3( g) 
B) CH 4( g)+ GaAs( s) 
C) CH 3CH 3( g)+ GaAs( s) 
D) CH 4( g)+ H 2GaAs( s) 
E) CH 3H( g)+ GaAs( s)

Question 11

Predict the product(s) for the reaction of the following set of reactants. Ca(s) + H2(g) →

Accepted Answer

A) CaH( s) 
B) CaH 2( s) 
C) Ca 2H 3( s) 
D) Ca 3H 2( s) 
E) None of these choices are correct. 
A) CaH( s) 
B) CaH 2( s) 
C) Ca 2H 3( s) 
D) Ca 3H 2( s) 
E) None of these choices are correct.

Question 12

The elements from Groups 1A(1) and 2A(2) are

Accepted Answer

A) strong acids. 
B) strong bases. 
C) amphoteric. 
D) strong oxidizing agents. 
E) strong reducing agents. 
A) strong acids. 
B) strong bases. 
C) amphoteric. 
D) strong oxidizing agents. 
E) strong reducing agents.

Question 13

Phosphoric acid (H3PO4) is a strong acid.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following oxides is most basic?

Accepted Answer

A) As 2O 3 
B) P 4O 10 
C) Sb 2O 3 
D) Sb 2O 5 
E) NO 2 
A) As 2O 3 
B) P 4O 10 
C) Sb 2O 3 
D) Sb 2O 5 
E) NO 2

Question 15

Which of the following pairs of elements will form the longest single bond?

Accepted Answer

A) C, F 
B) C, N 
C) C, S 
D) C, O 
E) C, H 
A) C, F 
B) C, N 
C) C, S 
D) C, O 
E) C, H

Question 16

Which element forms compounds, e.g., Teflon, which are used as coatings for other substances?

Accepted Answer

A) Boron 
B) Beryllium 
C) Fluorine 
D) Nitrogen 
E) Sodium 
A) Boron 
B) Beryllium 
C) Fluorine 
D) Nitrogen 
E) Sodium

Question 17

Certain Period 2 elements exhibit behaviors similar to Period 3 elements immediately below and to the right. One of these interesting diagonal relationships occurs between lithium and magnesium. Which of the following is one of their similarities?

Accepted Answer

A) They both form insoluble carbonate salts. 
B) Both elements are important in treating manic-depression. 
C) Their first ionization energies are almost equal. 
D) Their densities are very similar. 
E) They both form organic compounds with polar covalent bonds from the metal to hydrocarbon group. 
A) They both form insoluble carbonate salts. 
B) Both elements are important in treating manic-depression. 
C) Their first ionization energies are almost equal. 
D) Their densities are very similar. 
E) They both form organic compounds with polar covalent bonds from the metal to hydrocarbon group.

Question 18

Which of the following statements about the effective nuclear charge, Zeff, is correct?

Accepted Answer

A) Z eff increases with the size of the atom. 
B) Z eff decreases across a period and increases down a group. 
C) Z eff increases across a period and is relatively constant down a group. 
D) Z eff increases as the value of the principal quantum number increases. 
E) Z eff is greater for hydrogen than for any other element. 
A) Z eff increases with the size of the atom. 
B) Z eff decreases across a period and increases down a group. 
C) Z eff increases across a period and is relatively constant down a group. 
D) Z eff increases as the value of the principal quantum number increases. 
E) Z eff is greater for hydrogen than for any other element.

Question 19

Consider all of the known elements. Which element has the greatest ability to covalently bond to itself and to form multiple bonds?

Accepted Answer

A) Al 
B) B 
C) C 
D) Si 
E) H 
A) Al 
B) B 
C) C 
D) Si 
E) H

Question 20

Which one of the following trends occurs as one moves down the group 1A (1) elements from Li to Cs?

Accepted Answer

A) Metallic character decreases 
B) Electronegativity increases 
C) Melting point increases 
D) First ionization energy increases 
E) Chemical reactivity increases 
A) Metallic character decreases 
B) Electronegativity increases 
C) Melting point increases 
D) First ionization energy increases 
E) Chemical reactivity increases

Exam 14: Periodic Patterns in the Main-Group Elements

The acidity of oxides of main group elements increases down a group, from top to bottom.

Which of the following elements has the lowest electronegativity?

Predict the products for the following set of reactants. Bi(s) + Cl2(g) →

In the gas phase, AlCl3 exists as molecules of Al2Cl6.

Group 1A elements are less reactive than group 2A elements.

Which of the following formulas does not represent a stable compound?

Which of the alkali metals has the highest melting point?

Predict the products for the following set of reactants. K2O(s) + H2O(l) →

The acidity of oxides of main group elements increases across a period from left to right.

Predict the products for the reaction of the following set of reactants. (CH3)3Ga(g) + AsH3(g) →

Predict the product(s) for the reaction of the following set of reactants. Ca(s) + H2(g) →

The elements from Groups 1A(1) and 2A(2) are

Phosphoric acid (H3PO4) is a strong acid.

Which of the following oxides is most basic?

Which of the following pairs of elements will form the longest single bond?

Which element forms compounds, e.g., Teflon, which are used as coatings for other substances?

Certain Period 2 elements exhibit behaviors similar to Period 3 elements immediately below and to the right. One of these interesting diagonal relationships occurs between lithium and magnesium. Which of the following is one of their similarities?

Which of the following statements about the effective nuclear charge, Zeff, is correct?

Consider all of the known elements. Which element has the greatest ability to covalently bond to itself and to form multiple bonds?

Which one of the following trends occurs as one moves down the group 1A (1) elements from Li to Cs?

Keys to the Study of Chemistry: Definitions, Units, and Problem Solving

The Components of Matter

Stoichiometry of Formulas and Equations

Three Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry: Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces: Liquids, Solids, and Phase Changes

The Properties of Mixtures: Solutions and Colloids

Organic Compounds and the Atomic Properties of Carbon

Kinetics: Rates and Mechanisms of Chemical Reactions

Equilibrium: the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics: Entropy, Free Energy, and Reaction Direction

Electrochemistry: Chemical Change and Electrical Work

The Elements in Nature and Industry

Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

Predict the products for the following set of reactants. Bi(s) + Cl₂(g) →

In the gas phase, AlCl₃ exists as molecules of Al₂Cl₆.

Predict the products for the following set of reactants. K₂O(s) + H₂O(l) →

Predict the products for the reaction of the following set of reactants. (CH₃)₃Ga(g) + AsH₃(g) →

Predict the product(s) for the reaction of the following set of reactants. Ca(s) + H₂(g) →

Phosphoric acid (H₃PO₄) is a strong acid.

Which of the following statements about the effective nuclear charge, Z_eff, is correct?