Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

Dinitrogen monoxide, N2O, is

Accepted Answer

A)   a brown poisonous gas that is one of the chemicals involved in the production of photochemical smog.
B)   a colorless gas used in the production of nitric acid.
C)   a colorless gas used as a propellant in canned whipped cream.
D)   a colorless gas that disproportionates into nitrogen and oxygen.
E)   None of these choices are correct.F) None of the above
G) C) and E)

Question 3

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)   HF) A) and B)
G) B) and E)

Question 4

Predict the products for the following set of reactants. Ca3As2(s)  + H2O(l)  →

Accepted Answer

A)   As3+(aq)  + Ca(OH) 2(aq) 
B)   As(OH) 3(s)  + Ca2+(aq)  + H2(g) 
C)   As(OH) 3(s)  + Ca(OH) 2(aq) 
D)   AsH3(g)  + Ca(OH) 2(aq) 
E)   CaH2(aq)  + As2O3(aq) F) B) and E)
G) B) and D)

Question 5

Unlike the remainder of the Group 1A(1)  elements, lithium forms many salts that have some covalent bond character. What is a reason for this behavior?

Accepted Answer

A)   The high first ionization energy of lithium makes sharing the electron easier than transferring it.
B)   The high charge density on the lithium cation deforms nearby polarizable electron clouds.
C)   The atomic radius of lithium enables it to share its valence electron effectively.
D)   Since lithium has only 1 electron in its 2s orbital, it can accept an electron from another element.
E)   Lithium's electronegativity is more like that of a non-metal than a metal.F) C) and D)
G) D) and E)

Question 6

The halogens act as oxidizing agents in most of their reactions.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following oxides will be the most acidic?

Accepted Answer

A)   Al2O3
B)   Ga2O3
C)   In2O3
D)   Tl2O3
E)   None of these oxides is acidic.F) B) and C)
G) None of the above

Question 8

Sulfuric acid is produced when sulfur dioxide dissolves in water.

Accepted Answer

A) True 
 B)False

Question 9

Phosphoric acid (H3PO4) is a strong acid.

Accepted Answer

A) True 
 B)False

Question 10

The Haber process is the first step in the manufacture of sulfuric acid.

Accepted Answer

A) True 
 B)False

Question 11

Xenon forms several compounds with oxygen and fluorine. It is the most reactive nonradioactive noble gas because

Accepted Answer

A)   its large radius allows oxygen and fluorine to bond without being crowded.
B)   it has the highest electronegativity of these noble gases.
C)   it has the highest electron affinity of these noble gases.
D)   its effective nuclear charge is lower than the other noble gases.
E)   it has the lowest ionization energy of these noble gases.F) B) and C)
G) D) and E)

Question 12

Which of the following ions and atoms has the greatest radius?

Accepted Answer

A)   Se2-
B)   Br-
C)   Rb+
D)   Sr2+
E)   KrF) A) and C)
G) C) and D)

Question 13

Which of the following pure substances will not participate in hydrogen bonding?

Accepted Answer

A)   CH3NH2
B)   CH3CH2OCH2CH3
C)   CH3CH2OH
D)   HF
E)   H2O2F) A) and C)
G) B) and E)

Question 14

Predict the products for the following set of reactants. Cl2(g)  + I-(aq)  →

Accepted Answer

A)   ICl
B)   ICl2
C)   ICl3
D)   I2 + Cl-
E)   I + Cl2-F) A) and D)
G) A) and C)

Question 15

Silicon halides have stronger bonds than corresponding carbon halides. Which of the following is a possible explanation of this phenomenon?

Accepted Answer

A)   The larger silicon atoms permit better overlap of its atomic orbitals with those of the halogens than the smaller carbons atoms do.
B)   The large electronegativity difference between silicon and the halogens makes their bonds stronger than those of carbon.
C)   Silicon has the ability to form a partial double bond with a halogen through the overlap of its d-orbital with a p-orbital of the halogen.
D)   Silicon has a larger effective nuclear charge than carbon which allows it to bond more strongly to the more negative halogens than carbon.
E)   Carbon-halogen bonds are unusually weak.F) A) and B)
G) C) and D)

Question 16

The largest electronegativities are found in the _____________ ____________ region of the periodic table.

Accepted Answer

A)   upper left
B)   upper right
C)   lower left
D)   lower right
E)   transition element (d-block) F) B) and E)
G) A) and E)

Question 17

The most basic oxides contain elements from the ________________ ____________ region of the periodic table.

Accepted Answer

A)   upper right
B)   upper left
C)   lower right
D)   lower left
E)   transition element (d-block) F) A) and E)
G) C) and D)

Question 18

Which of the following elements has the lowest electronegativity?

Accepted Answer

A)   Al
B)   S
C)   Mg
D)   In
E)   BaF) A) and E)
G) A) and D)

Question 19

In which of the following ways is lithium different from the other alkali metals?

Accepted Answer

A)   Its salts are much more soluble in water than those of the other alkali metals.
B)   It has an unusually high density.
C)   It forms molecular compounds with the hydrocarbon groups of organic halides.
D)   Its ionization energy is lower than expected.
E)   It does not react with water at room temperature.F) A) and C)
G) B) and E)

Question 20

Potassium is a strong reducing agent.

Accepted Answer

A) True 
 B)False

Exam 14: Periodic Patterns in the Main-Group Elements

Sulfuric acid is produced when sulfur dioxide dissolves in water.

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The Haber process is the first step in the manufacture of sulfuric acid.

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

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Which of the following oxides will be the most acidic?

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Potassium is a strong reducing agent.

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Which of the following elements has the lowest electronegativity?

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In which of the following ways is lithium different from the other alkali metals?

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Which of the following pure substances will not participate in hydrogen bonding?

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Unlike the remainder of the Group 1A(1) elements, lithium forms many salts that have some covalent bond character. What is a reason for this behavior?

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The largest electronegativities are found in the _____________ ____________ region of the periodic table.

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Predict the products for the following set of reactants. Ca3As2(s) + H2O(l) →

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Phosphoric acid (H3PO4) is a strong acid.

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Predict the products for the following set of reactants. Cl2(g) + I-(aq) →

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Silicon halides have stronger bonds than corresponding carbon halides. Which of the following is a possible explanation of this phenomenon?

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Dinitrogen monoxide, N2O, is

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Which of the following ions and atoms has the greatest radius?

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The halogens act as oxidizing agents in most of their reactions.

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

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The most basic oxides contain elements from the ________________ ____________ region of the periodic table.

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Xenon forms several compounds with oxygen and fluorine. It is the most reactive nonradioactive noble gas because

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The largest electronegativities are found in the _ region of the periodic table.

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Predict the products for the following set of reactants. Ca₃As₂(s) + H₂O(l) →

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Phosphoric acid (H₃PO₄) is a strong acid.

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Predict the products for the following set of reactants. Cl₂(g) + I-(aq) →

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Dinitrogen monoxide, N₂O, is

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

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The most basic oxides contain elements from the ____ region of the periodic table.

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