Question 1

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) D) and E)
G) B) and D)

Question 2

Which of these compounds does not follow the octet rule?

Accepted Answer

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

Question 3

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

Question 4

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

Question 5

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 6

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) A) and B)
G) A) and C)

Question 7

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 8

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 9

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

Accepted Answer

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

Question 10

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

Question 11

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) B) and E)
G) B) and C)

Question 12

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) All of the above
G) B) and C)

Question 13

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) B) and C)

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

Question 15

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 E)
G) C) and E)

Question 16

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) A) and B)
G) C) and E)

Question 17

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) All of the above
G) D) and E)

Question 18

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 E)
G) All of the above

Question 19

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 C)
G) C) and D)

Question 20

What is one chemical formula of the carbide ion?

Accepted Answer

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

Exam 24: Nonmetallic Elements and Their Compounds

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

Correct Answer
verified

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

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

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

Correct Answer
verified

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

Correct Answer
verified

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

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

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

Correct Answer
verified

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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The presence of ozone in the upper atmosphere is important because

Correct Answer
verified

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

Correct Answer
verified

What is one chemical formula of the carbide ion?

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

Correct Answer
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Nitrous oxide,N₂O,is

Correct Answer
verified

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

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

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

Correct Answer
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The main commercial source of bromine is

Correct Answer
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Sulfur hexafluoride,SF₆,is

Correct Answer
verified

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

Correct Answer
verified

Exam 24: Nonmetallic Elements and Their Compounds

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

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 substances is being considered as a replacement fuel for gasoline?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

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

The presence of ozone in the upper atmosphere is important because

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What is one chemical formula of the carbide ion?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Nitrous oxide,N2O,is

Correct AnswerverifiedShow Answer

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

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

Correct AnswerverifiedShow Answer

Which of these compounds does not follow the octet rule?

Correct AnswerverifiedShow Answer

The main commercial source of bromine is

Correct AnswerverifiedShow Answer

Sulfur hexafluoride,SF6,is

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

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
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Nitrous oxide,N₂O,is

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Sulfur hexafluoride,SF₆,is

Correct Answer
verified

Correct Answer
verified