Question 1

Identify by number (1A-8A)the main group of the periodic table to which the described element
(X)belongs,in each of the following cases.
a.X commonly forms the ion X2-.
b.X reacts with water according to the equation
X(s)+ 2H2O(l)→ X(OH)2(aq)+ H2(g)
c.X exists as molecules,X2; its hydride has the formula HX.
d.X is a metal which reacts with oxygen to produce the peroxide,X2O2.

Accepted Answer

a.6A (16)b...

Question 2

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) None of the above
G) B) and D)

Question 3

Which of these substances is being considered as a replacement fuel for gasoline?

Accepted Answer

A)  D2O
B)  H2
C)  NO2
D)  F2
E)  HeF) B) and C)
G) B) and E)

Question 4

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

Accepted Answer

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

Question 5

Hydrogen is placed at the top of Group 1A of the periodic table,so it must be a metal.

Accepted Answer

A) True 
 B)False

Question 6

Name the three different classes (types)of hydride,and list some of their important characteristics.

Accepted Answer

Ionic hydrides form with metals from Gro...

Question 7

Silicon carbide is an important industrial chemical.Which of the following statements about silicon carbide is true?

Accepted Answer

A)  It will react with water to form acetylene.
B)  It is used in the preparation of glass which can be used at high temperature.
C)  It is the hardest known substance.
D)  It is a naturally occurring mineral source of silicon.
E)  It is used for cutting,grinding,and polishing metals and glasses.F) A) and C)
G) D) and E)

Question 8

What is the formal charge on the oxygen atom in N2O (the atomic order is N-N-O) with a triple bond between the two N atoms and a single bond between N and O?

Accepted Answer

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

Question 9

What is one chemical formula of the carbide ion?

Accepted Answer

A)  Si4-
B)  C2-
C)  C22-
D)  CN-
E)  C3-F) C) and D)
G) A) and E)

Question 10

Sulfur hexafluoride,SF6,is

Accepted Answer

A)  a reactive gas that decomposes when exposed to moisture.
B)  a reactive gas used to fluorinate organic compounds.
C)  an inert gas that is used as an electrical insulator.
D)  a reactant in the process of manufacturing non-stick coatings.
E)  used in the manufacture of sulfuric acid.F) A) and B)
G) A) and C)

Question 11

Which of these elements is most likely to exhibit an expanded octet in its compounds?

Accepted Answer

A)  C
B)  O
C)  N
D)  S
E)  NaF) A) and C)
G) B) and E)

Question 12

Which of these choices is the electron configuration of a sulfide ion?

Accepted Answer

A)  [Ne]
B)  [Ne]3s23p2
C)  [Ar]
D)  [Ne]3s23p1
E)  [Ne]3s23p4F) C) and E)
G) A) and B)

Question 13

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) C) and E)
G) A) and D)

Question 14

What element is the most abundant by mass in Earth's crust?

Accepted Answer

A)  Fe
B)  H
C)  K
D)  P
E)  OF) A) and E)
G) B) and D)

Question 15

What is the general electron configuration for atoms of all elements in Group 5A?

Accepted Answer

A)  ns2np1
B)  ns2np6
C)  ns2np5
D)  ns2np3
E)  ns2np4F) A) and D)
G) C) and D)

Question 16

The presence of ozone in the upper atmosphere is important because

Accepted Answer

A)  O3 absorbs outgoing radiation from the earth's surface,thus helping to keep the earth warm.
B)  O3 absorbs harmful solar radiation.
C)  O3 dissolves in water droplets and is very reactive.
D)  O3 is a major reactant in photosynthesis.E) B) and D)
F) A) and B)

Question 17

The main commercial source of bromine is

Accepted Answer

A)  silver bromide ore.
B)  seawater.
C)  the Frasch process.
D)  phosphate rock.
E)  the Ostwald process.F) A) and D)
G) A) and C)

Question 18

Which of these compounds does not follow the octet rule?

Accepted Answer

A)  PF5
B)  HF
C)  NF3
D)  AsCl3
E)  CF4F) A) and C)
G) A) and B)

Question 19

Nitrous oxide,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 gas that supports combustion.
D)  an allotrope of nitrogen.
E)  a paramagnetic gas.F) B) and E)
G) A) and E)

Question 20

___________ ___________ are formed when molecular hydrogen combines directly with an alkali metal.

Accepted Answer

The answer of ___________ ___________ are formed when molecular hydrogen...

Exam 24: Nonmetallic Elements and Their Compounds

The presence of ozone in the upper atmosphere is important because

Correct Answer
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Which of these compounds does not follow the octet rule?

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

Correct Answer
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Name the three different classes (types)of hydride,and list some of their important characteristics.

Correct Answer
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Ionic hydrides form with metals from Gro...
View Answer

Which of these choices is the electron configuration of a sulfide ion?

Correct Answer
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_ _ are formed when molecular hydrogen combines directly with an alkali metal.

Correct Answer
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What is one chemical formula of the carbide ion?

Correct Answer
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What is the general electron configuration for atoms of all elements in Group 5A?

Correct Answer
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The main commercial source of bromine is

Correct Answer
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What element is the most abundant by mass in Earth's crust?

Correct Answer
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What is the formal charge on the oxygen atom in N₂O (the atomic order is N-N-O) with a triple bond between the two N atoms and a single bond between N and O?

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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Sulfur hexafluoride,SF₆,is

Correct Answer
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Silicon carbide is an important industrial chemical.Which of the following statements about silicon carbide is true?

Correct Answer
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Nitrous oxide,N₂O,is

Correct Answer
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Which of these substances is being considered as a replacement fuel for gasoline?

Correct Answer
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Which of these elements is most likely to exhibit an expanded octet in its compounds?

Correct Answer
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Correct Answer
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a.6A (16)b...
View Answer

Hydrogen is placed at the top of Group 1A of the periodic table,so it must be a metal.

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

Correct Answer
verified

Exam 24: Nonmetallic Elements and Their Compounds

The presence of ozone in the upper atmosphere is important because

Correct AnswerverifiedShow Answer

Which of these compounds does not follow the octet rule?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Name the three different classes (types)of hydride,and list some of their important characteristics.

Correct AnswerverifiedIonic hydrides form with metals from Gro...View AnswerShow Answer

Which of these choices is the electron configuration of a sulfide ion?

Correct AnswerverifiedShow Answer

___________ ___________ are formed when molecular hydrogen combines directly with an alkali metal.

Correct AnswerverifiedShow Answer

What is one chemical formula of the carbide ion?

Correct AnswerverifiedShow Answer

What is the general electron configuration for atoms of all elements in Group 5A?

Correct AnswerverifiedShow Answer

The main commercial source of bromine is

Correct AnswerverifiedShow Answer

What element is the most abundant by mass in Earth's crust?

Correct AnswerverifiedShow Answer

What is the formal charge on the oxygen atom in N2O (the atomic order is N-N-O) with a triple bond between the two N atoms and a single bond between N and O?

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

Sulfur hexafluoride,SF6,is

Correct AnswerverifiedShow Answer

Silicon carbide is an important industrial chemical.Which of the following statements about silicon carbide is true?

Correct AnswerverifiedShow Answer

Nitrous oxide,N2O,is

Correct AnswerverifiedShow Answer

Which of these substances is being considered as a replacement fuel for gasoline?

Correct AnswerverifiedShow Answer

Which of these elements is most likely to exhibit an expanded octet in its compounds?

Correct AnswerverifiedShow Answer

Correct Answerverifieda.6A (16)b...View AnswerShow Answer

Hydrogen is placed at the top of Group 1A of the periodic table,so it must be a metal.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Ionic hydrides form with metals from Gro...
View Answer

Correct Answer
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_ _ are formed when molecular hydrogen combines directly with an alkali metal.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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What is the formal charge on the oxygen atom in N₂O (the atomic order is N-N-O) with a triple bond between the two N atoms and a single bond between N and O?

Correct Answer
verified

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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Sulfur hexafluoride,SF₆,is

Correct Answer
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Correct Answer
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Nitrous oxide,N₂O,is

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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a.6A (16)b...
View Answer

Correct Answer
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Correct Answer
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