Question 1

A(n) ________ is the smallest unit of two or more atoms held together by a covalent bond.

Accepted Answer

A)  ionic compound
B)  unit
C)  nucleus
D)  molecule
E)  formulaF) C) and D)
G) B) and E)

Question 2

In a covalently bonded molecule, the number of electrons that an atom shares with others is usually equal to the number of electrons

Accepted Answer

A)  in the atom.
B)  needed to give it a stable electron configuration.
C)  in its nucleus.
D)  in all the atoms.
E)  in its ion.F) B) and E)
G) B) and C)

Question 3

The name of  is

Accepted Answer

A)   sulfur(I)  chloride.
B)   silver(I)  chloride.
C)   gold(I)  chloride.
D)   silver(II)  chloride.
E)   silver chloride.F) B) and D)
G) C) and D)

Question 4

What is the correct formula for the iron(II)  ion?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) C) and D)
G) B) and C)

Question 5

What is the correct formula for the oxide ion?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) None of the above
G) A) and B)

Question 6

The compound  is named

Accepted Answer

A)   dimagnesium chloride.
B)   magnesium chloride.
C)   magnesium chlorine.
D)   magnesium dichloride.
E)   magnesium(II)  chloride.F) B) and D)
G) A) and D)

Question 7

Which of the following elements has the lowest electronegativity?

Accepted Answer

A)  N
B)  F
C)  O
D)  C
E)  LiF) B) and C)
G) All of the above

Question 8

The number of valence electrons found in an atom of a Group A element is equal to

Accepted Answer

A)  its atomic number.
B)  its mass number.
C)  eight minus the group number.
D)  eight.
E)  its group number.F) A) and D)
G) A) and E)

Question 9

The strongest interactions in the compound sodium fluoride, NaF, are examples of

Accepted Answer

A)  ionic bonds.
B)  covalent bonds.
C)  hydrogen bonds.
D)  dipole-dipole attractions.
E)  dispersion forces.F) A) and C)
G) C) and E)

Question 10

The carbon tetrachloride molecule,  is

Accepted Answer

A)   a polar molecule with ionic bonds.
B)   a polar molecule with nonpolar bonds.
C)   a nonpolar molecule with nonpolar bonds.
D)   a nonpolar molecule with polar bonds.
E)   a polar molecule with polar bonds.F) B) and D)
G) B) and C)

Question 11

A polar covalent bond is found in which of these compounds?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) B) and C)
G) None of the above

Question 12

What is the formula of carbon tetraiodide?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) B) and E)
G) B) and C)

Question 13

How many valence electrons are in the Lewis structure of

Accepted Answer

A)   6
B)   0
C)   32
D)   8
E)   82F) A) and E)
G) A) and B)

Question 14

Which of the following polyatomic ions has a positive charge?

Accepted Answer

A)  hydroxide
B)  sulfate
C)  hydrogen carbonate
D)  nitrate
E)  ammoniumF) A) and B)
G) C) and D)

Question 15

The strongest interactions between atoms of helium, He, are examples of

Accepted Answer

A)  ionic bonds.
B)  covalent bonds.
C)  hydrogen bonds.
D)  dipole-dipole attractions.
E)  dispersion forces.F) C) and D)
G) B) and D)

Question 16

Hydrogen sulfide,  has a shape similar to

Accepted Answer

A)   carbon dioxide.
B)   carbon tetrachloride.
C)   water.
D)   carbon monoxide.
E)   hydrogen chloride.F) B) and C)
G) C) and D)

Question 17

The ammonia molecule,  is

Accepted Answer

A)   a nonpolar molecule with nonpolar bonds.
B)   a polar molecule with ionic bonds.
C)   a polar molecule with polar bonds.
D)   a nonpolar molecule with polar bonds.
E)   a polar molecule with nonpolar bonds.F) B) and E)
G) C) and D)

Question 18

What is the correct formula for iron(III)  sulfide?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) B) and D)
G) C) and D)

Question 19

Which of the following substances contains a nonpolar covalent bond?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) A) and C)
G) All of the above

Question 20

The strongest interactions between molecules of iodine,  , are examples of

Accepted Answer

A)   ionic bonds.
B)   covalent bonds.
C)   hydrogen bonds.
D)   dipole-dipole attractions.
E)   dispersion forces.F) A) and B)
G) A) and C)

Exam 6: Ionic and Molecular Compounds

A polar covalent bond is found in which of these compounds?

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The strongest interactions between atoms of helium, He, are examples of

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The strongest interactions in the compound sodium fluoride, NaF, are examples of

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How many valence electrons are in the Lewis structure of

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Hydrogen sulfide, has a shape similar to

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Which of the following substances contains a nonpolar covalent bond?

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What is the correct formula for the iron(II) ion?

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The name of is

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The strongest interactions between molecules of iodine, , are examples of

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A(n) ________ is the smallest unit of two or more atoms held together by a covalent bond.

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What is the correct formula for iron(III) sulfide?

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Which of the following polyatomic ions has a positive charge?

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What is the formula of carbon tetraiodide?

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Which of the following elements has the lowest electronegativity?

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The compound is named

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The carbon tetrachloride molecule, is

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What is the correct formula for the oxide ion?

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In a covalently bonded molecule, the number of electrons that an atom shares with others is usually equal to the number of electrons

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The number of valence electrons found in an atom of a Group A element is equal to

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The ammonia molecule, is

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