Question 1

The chemistry of fluorine differs in many ways from that of the rest of the halogens.

Accepted Answer

A) True 
 B)False

Question 2

Consider the oxides XO2, where X is a main group element. Identify X in each of the following cases:
a. XO2 is a natural component of the atmosphere, implicated in global warming.
b. XO2 is a toxic, brown gas and a component of photochemical smog.
c. XO2 is a colorless, toxic gas, implicated in acid rain.

Accepted Answer

Question 3

In their elemental forms, the halogens are

Accepted Answer

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

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

P4O6 and P4O10 are allotropes of phosphorus.

Accepted Answer

A) True 
 B)False

Question 6

Which, if any, of the following generalized formulas does not exist for interhalogen compounds? (X and Y represent different halogens.)

Accepted Answer

A)   XY
B)   XY2
C)   XY3
D)   XY5
E)   All may represent stable interhalogen compounds.F) C) and E)
G) A) and B)

Question 7

Which of the following compounds is not a common phosphorus-containing oxoacid?

Accepted Answer

A)   H3PO4
B)   H5P3O10
C)   H3PO3
D)   H3PO2
E)   H3P2O7F) A) and E)
G) A) and D)

Question 8

Air is made up of approximately 80% of which of the following?

Accepted Answer

A)   Hydrogen
B)   Nitrogen
C)   Carbon
D)   Oxygen
E)   HeliumF) B) and C)
G) B) and E)

Question 9

Which of these compounds is most likely to be covalent?

Accepted Answer

A)   CS2
B)   MgI2
C)   CaO
D)   Rb2S
E)   SrCl2F) A) and B)
G) All of the above

Question 10

Ionic hydrides do not have exact (stoichiometric) formulas.

Accepted Answer

A) True 
 B)False

Question 11

The electron dot formula for molecular oxygen has

Accepted Answer

A)   a single covalent bond.
B)   an ionic bond.
C)   a double covalent bond.
D)   a total of 8 × 2 = 16 electron dots.
E)   a total of 8 × 4 = 32 electron dots.F) A) and B)
G) B) and C)

Question 12

What is the formal charge on sulfur in the best Lewis structure for the SCN-?

Accepted Answer

A)   +2
B)   -2
C)   -1
D)   +1
E)   0F) C) and E)
G) B) and D)

Question 13

The chemical formula for the superoxide ion is

Accepted Answer

A)   O-.
B)   O22-.
C)   O2-.
D)   O3-.
E)   O2-.F) A) and E)
G) None of the above

Question 14

________ is the addition of molecular hydrogen to compounds containing multiple bonds (double or triple).

Accepted Answer

The answer of ________ is the addition of molecular hydrogen...

Question 15

What products are formed from the reaction of H2O(l)  with ClF5(l) ?

Accepted Answer

A)   HClO2(aq)  and HF(aq) 
B)   HClO3(aq)  and HF(aq) 
C)   HClO(aq)  and HF(aq) 
D)   HCl(aq)  and HF(aq) 
E)   HClO(aq)  and HFO(aq) F) A) and B)
G) B) and D)

Question 16

The term catenation describes the

Accepted Answer

A)   tendency of carbon atoms to form cations in the presence of alkali metals.
B)   process of creating synthetic gas from coal.
C)   extraction of precious metals with sodium or potassium cyanide.
D)   ability of carbon atoms to form long chains and rings.
E)   interaction of Group 4A elements with Group 8A elements at high pressures and temperatures to form coordination compounds.F) None of the above
G) A) and D)

Question 17

Which of the following has the most allotropes?

Accepted Answer

A)   Carbon
B)   Sulfur
C)   Oxygen
D)   Selenium
E)   NitrogenF) A) and D)
G) C) and D)

Question 18

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

Question 19

Which would exhibit characteristics of both a metal and a nonmetal?

Accepted Answer

A)   Si
B)   Ge
C)   Sb
D)   Po
E)   All of the exhibit characteristics of both a metal and a nonmetal.F) A) and B)
G) B) and E)

Question 20

Which is true concerning the difference between second-row and third-row main group nonmetals?

Accepted Answer

A)   Third-row nonmetals react readily with acids, while second-row nonmetals are mostly unreactive towards acids.
B)   Third-row hydrides tend to be more acidic than second-row hydrides.
C)   Third-row oxides tend to be less basic than second-row oxides.
D)   In their elemental forms, third-row nonmetals are comprised of molecules, while second-row nonmetals are comprised of individual atoms.
E)   Atoms of third-row nonmetals may have high oxidation numbers, while atoms of second-row nonmetals may only have negative oxidation numbers.F) All of the above
G) None of the above

Exam 25: Organic Chemistry

The chemistry of fluorine differs in many ways from that of the rest of the halogens.

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

Correct Answer
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Which of the following has the most allotropes?

Correct Answer
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The chemical formula for the superoxide ion is

Correct Answer
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P₄O₆ and P₄O₁₀ are allotropes of phosphorus.

Correct Answer
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Ionic hydrides do not have exact (stoichiometric) formulas.

Correct Answer
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Which is true concerning the difference between second-row and third-row main group nonmetals?

Correct Answer
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Which of these compounds is most likely to be covalent?

Correct Answer
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What is the formal charge on sulfur in the best Lewis structure for the SCN^-?

Correct Answer
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________ is the addition of molecular hydrogen to compounds containing multiple bonds (double or triple).

Correct Answer
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Air is made up of approximately 80% of which of the following?

Correct Answer
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Which, if any, of the following generalized formulas does not exist for interhalogen compounds? (X and Y represent different halogens.)

Correct Answer
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What products are formed from the reaction of H₂O(l) with ClF₅(l) ?

Correct Answer
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Which of the following compounds is not a common phosphorus-containing oxoacid?

Correct Answer
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Correct Answer
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The term catenation describes the

Correct Answer
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Which would exhibit characteristics of both a metal and a nonmetal?

Correct Answer
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The electron dot formula for molecular oxygen has

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

Correct Answer
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In their elemental forms, the halogens are

Correct Answer
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Exam 25: Organic Chemistry

The chemistry of fluorine differs in many ways from that of the rest of the halogens.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following has the most allotropes?

Correct AnswerverifiedShow Answer

The chemical formula for the superoxide ion is

Correct AnswerverifiedShow Answer

P4O6 and P4O10 are allotropes of phosphorus.

Correct AnswerverifiedShow Answer

Ionic hydrides do not have exact (stoichiometric) formulas.

Correct AnswerverifiedShow Answer

Which is true concerning the difference between second-row and third-row main group nonmetals?

Correct AnswerverifiedShow Answer

Which of these compounds is most likely to be covalent?

Correct AnswerverifiedShow Answer

What is the formal charge on sulfur in the best Lewis structure for the SCN-?

Correct AnswerverifiedShow Answer

________ is the addition of molecular hydrogen to compounds containing multiple bonds (double or triple).

Correct AnswerverifiedShow Answer

Air is made up of approximately 80% of which of the following?

Correct AnswerverifiedShow Answer

Which, if any, of the following generalized formulas does not exist for interhalogen compounds? (X and Y represent different halogens.)

Correct AnswerverifiedShow Answer

What products are formed from the reaction of H2O(l) with ClF5(l) ?

Correct AnswerverifiedShow Answer

Which of the following compounds is not a common phosphorus-containing oxoacid?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The term catenation describes the

Correct AnswerverifiedShow Answer

Which would exhibit characteristics of both a metal and a nonmetal?

Correct AnswerverifiedShow Answer

The electron dot formula for molecular oxygen has

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In their elemental forms, the halogens are

Correct AnswerverifiedShow Answer

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

Correct Answer
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P₄O₆ and P₄O₁₀ are allotropes of phosphorus.

Correct Answer
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What is the formal charge on sulfur in the best Lewis structure for the SCN^-?

Correct Answer
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What products are formed from the reaction of H₂O(l) with ClF₅(l) ?

Correct Answer
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