Question 1

Carbon monoxide's toxicity is related to its ability to bond to iron in hemoglobin.

Accepted Answer

A) True 
 B)False

Question 2

What is the stable form of the element sulfur, at room temperature?

Accepted Answer

A)  atomic sulfur 
B)  S2 
C)  S4 
D)  S6 
E)  S8

Question 3

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

Accepted Answer

A)  SrO(s) + H2(g) 
B)  Sr2+(aq) + H2(g) + O2(g) 
C)  Sr2+(aq) + H3O+(aq) 
D)  Sr(OH)2(s) + H2(g) 
E)  SrH2(s) + O2(g)

Question 4

Which of the following bonds should have the greatest ionic character?

Accepted Answer

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

Question 5

Thallium can form two oxides, Tl2O and Tl2O3. Which will be the more basic substance?

Accepted Answer

A)  Tl2O 
B)  Tl2O3 
C)  They have the same strength as bases. 
D)  Neither compound has any acidic or basic properties. 
E)  More information is needed to make an accurate prediction.

Question 6

Neon does not form any known compounds.

Accepted Answer

A) True 
 B)False

Question 7

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 beryllium and aluminum. Which of the following is one of their differences?

Accepted Answer

A)  Some aluminum compounds and all beryllium compounds show significant covalent character in the gas phase. 
B)  Beryllium forms bridge bonds in its hydrides while aluminum does not. 
C)  Both form oxides that are impervious to reaction with water. 
D)  The cations for both strongly polarize nearby electron clouds. 
E)  Beryllium occurs in nature as the uncombined element, whereas aluminum does not.

Question 8

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

Accepted Answer

A)  Li+(aq) + H2(g) + O2(g) 
B)  Li+(aq) + H2(g) + OH-(aq) 
C)  LiH(s) + O2(g) 
D)  Li+(aq) + H2O2(aq) 
E)  LiOH(aq) + H2O2(aq)

Question 9

One important feature of the chemistry of carbon is

Accepted Answer

A)  its large radius that allows other atoms to fit easily around it. 
B)  its low electronegativity that allows it to ionize easily. 
C)  its amphoteric behavior. 
D)  its ability to form multiple bonds with hydrogen. 
E)  its ability to catenate.

Question 10

In gaseous BeCl2, Be does not obey the octet rule; in solid BeCl2 it does.

Accepted Answer

A) True 
 B)False

Question 11

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

Accepted Answer

A)  N2O 
B)  NO 
C)  NO2 
D)  NO3 
E)  N2O4

Question 12

Nitric acid, HNO3

Accepted Answer

A)  is a strong reducing agent. 
B)  is a weak oxidizing agent. 
C)  does not react with copper metal. 
D)  may react with copper metal to produce NO gas. 
E)  reacts with metal hydroxides to produce nitrite salts.

Question 13

Most of the alkali metal salts are soluble in water while many alkaline earth salts have very low solubilities. Why is this so?

Accepted Answer

A)  The alkali metal cations are smaller than the alkaline earth cations and are more easily hydrated. 
B)  The alkali metals have lower ionization energies than alkaline earth elements. 
C)  The alkaline earth salts have much greater lattice energies than the alkali metal salts. 
D)  The alkaline earth metals have greater heats of atomization than the alkali metals. 
E)  Alkaline earth cations have very low heats of hydration.

Question 14

Which of the following pairs of elements exhibit similar physical and chemical behaviors ("diagonal relationships")?

Accepted Answer

A)  H and Be 
B)  Na and Be 
C)  Be and Al 
D)  B and Mg 
E)  Li and Al

Question 15

Elements of group 1A have higher melting and boiling points than those of group 2A.

Accepted Answer

A) True 
 B)False

Question 16

The strongest elemental oxidizing agents are found in the _________ _________ region of the periodic table while the strongest reducing agents are found in the ________ ________ region of the periodic table.

Accepted Answer

A)  upper left; lower right 
B)  upper right; lower left 
C)  lower left; upper right 
D)  lower right; upper left 
E)  transition element; main group

Question 17

Predict the products for the following set of reactants. Li(s) + CH3Cl(g) →

Accepted Answer

A)  CH3CH3(g) + LiCl(s) 
B)  CH4(g) + LiCl(s) 
C)  CH3Li(s) + LiCl(s) 
D)  CH3Li(s) + Cl2(g) 
E)  CH2Li(s) + HCl(g)

Question 18

Hydrogen forms metallic (interstitial) hydrides with the d and f transition elements. Which of the following statements is correct?

Accepted Answer

A)  These substances have distinct stoichiometric formulas like ionic hydrides. 
B)  Hydrogen forms bonds with the metals by donating its electron to the valence band of the metal. 
C)  Hydrogen molecules and atoms occupy holes within the crystal structure of the metal. 
D)  These substances are useful catalysts. 
E)  These hydrides are stabilized by hydrogen bonding forces.

Question 19

When elements from a group exhibit more than one oxidation state,

Accepted Answer

A)  the higher oxidation state is more important as one goes down a group. 
B)  the lower oxidation state is more important as one goes down a group. 
C)  both oxidation states are equally important throughout the group. 
D)  the oxidation state will be affected by the elements on either side of it in the period. 
E)  None of these choices are correct.

Question 20

Which of the following oxides will give the most acidic solution when dissolved in water?

Accepted Answer

A)  MgO 
B)  Al2O3 
C)  Cl2O 
D)  SrO 
E)  H2O2

Exam 14: Periodic Patterns in the Main-Group Elements

Carbon monoxide's toxicity is related to its ability to bond to iron in hemoglobin.

What is the stable form of the element sulfur, at room temperature?

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

Which of the following bonds should have the greatest ionic character?

Thallium can form two oxides, Tl₂O and Tl₂O₃. Which will be the more basic substance?

Neon does not form any known compounds.

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 beryllium and aluminum. Which of the following is one of their differences?

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

One important feature of the chemistry of carbon is

In gaseous BeCl₂, Be does not obey the octet rule; in solid BeCl₂ it does.

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

Nitric acid, HNO₃

Most of the alkali metal salts are soluble in water while many alkaline earth salts have very low solubilities. Why is this so?

Which of the following pairs of elements exhibit similar physical and chemical behaviors ("diagonal relationships") ?

Elements of group 1A have higher melting and boiling points than those of group 2A.

The strongest elemental oxidizing agents are found in the _____ _ region of the periodic table while the strongest reducing agents are found in the ____ region of the periodic table.

Predict the products for the following set of reactants. Li(s) + CH₃Cl(g) →

Hydrogen forms metallic (interstitial) hydrides with the d and f transition elements. Which of the following statements is correct?

When elements from a group exhibit more than one oxidation state,

Which of the following oxides will give the most acidic solution when dissolved in water?