Question 1

How many valence electrons does carbon have?

Accepted Answer

A)  one
B)  two
C)  three
D)  four
E)  fiveF) B) and E)
G) All of the above

Question 2

How many valence electrons are in the electron-dot structure of H2O?

Accepted Answer

A)  2
B)  4
C)  6
D)  8
E)  10F) None of the above
G) B) and E)

Question 3

Which of the following compounds contains an ionic bond?

Accepted Answer

A)  NH3
B)  H2O
C)  CaO
D)  H2
E)  CH4F) A) and B)
G) None of the above

Question 4

Fe2(SO₄) 3 is called

Accepted Answer

A)  iron sulfate.
B)  iron(II) sulfate.
C)  iron(III) sulfate.
D)  diiron trisulfate.
E)  iron trisulfate.F) C) and E)
G) None of the above

Question 5

Which of the following elements has the lowest electronegativity?

Accepted Answer

A)  Li
B)  C
C)  N
D)  O
E)  FF) B) and D)
G) A) and E)

Question 6

The ammonia molecule ( NH3)  is

Accepted Answer

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

Question 7

Which of the following elements does NOT exist as a diatomic molecule?

Accepted Answer

A)  hydrogen
B)  nitrogen
C)  chlorine
D)  oxygen
E)  carbonF) All of the above
G) C) and E)

Question 8

The ion of aluminum is

Accepted Answer

A)  Al+.
B)  Al2+.
C)  Al₃+.
D)  Al₃-.
E)  Al2-.F) A) and E)
G) C) and E)

Question 9

How many valence electrons are in the electron-dot structures for the elements in group 3A(13) ?

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  6F) A) and B)
G) A) and C)

Question 10

How many lone pairs of electrons are in the electron-dot structure of H2O?

Accepted Answer

A)  0
B)  1
C)  2
D)  3
E)  4F) A) and B)
G) B) and C)

Question 11

Double and triple bonds form because

Accepted Answer

A)  the atoms involved have high electronegativities.
B)  single covalent bonds do not give all of the atoms in the molecule eight valence electrons.
C)  one of the atoms in the molecule has more than eight valence electrons.
D)  the ions involved have charges larger than one.
E)  there is at least one hydrogen atom involved in the bond.F) C) and D)
G) A) and E)

Question 12

The shape of the carbon tetrachloride molecule is

Accepted Answer

A)  linear.
B)  square.
C)  pyramidal.
D)  tetrahedral.
E)  octagonal.F) A) and B)
G) A) and C)

Question 13

What is the formula of a compound that contains Na+ and PO₄ 3- ions?

Accepted Answer

A)  Na3PO₄
B)  NaPO₄
C)  Na2PO₃
D)  Na3PO₃
E)  Na3PF) B) and D)
G) A) and B)

Question 14

The formula for a molecule formed from N and Cl would be

Accepted Answer

A)  NCl.
B)  NCl₂
C)  NCl₃
D)  N3Cl.
E)  NCl5.F) B) and D)
G) C) and E)

Question 15

Identify each of the following compounds as covalent or ionic.
-sodium fluoride

Accepted Answer

The answer of Identify each of the following compounds as...

Question 16

The correct name for the compound N2O3 is

Accepted Answer

A)  nitrogen oxide.
B)  nitrogen trioxide.
C)  dinitride trioxide.
D)  dinitrogen oxide.
E)  dinitrogen trioxide.F) A) and E)
G) A) and D)

Question 17

What is the correct formula for the oxide ion?

Accepted Answer

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

Question 18

Identify each of the following compounds as covalent or ionic.
-potassium oxide

Accepted Answer

The answer of Identify each of the following compounds as...

Exam 6: Ionic and Molecular Compounds

Which of the following elements has the lowest electronegativity?

Correct Answer
verified

The formula for a molecule formed from N and Cl would be

Correct Answer
verified

What is the correct formula for the oxide ion?

Correct Answer
verified

How many valence electrons are in the electron-dot structure of H₂O?

Correct Answer
verified

Which of the following elements does NOT exist as a diatomic molecule?

Correct Answer
verified

What is the formula of a compound that contains Na⁺ and PO₄ ^3- ions?

Correct Answer
verified

The shape of the carbon tetrachloride molecule is

Correct Answer
verified

The ammonia molecule ( NH₃) is

Correct Answer
verified

Which of the following compounds contains an ionic bond?

Correct Answer
verified

How many valence electrons are in the electron-dot structures for the elements in group 3A(13) ?

Correct Answer
verified

The ion of aluminum is

Correct Answer
verified

Identify each of the following compounds as covalent or ionic. -sodium fluoride

Correct Answer
verified

Fe₂(SO₄) ₃ is called

Correct Answer
verified

How many lone pairs of electrons are in the electron-dot structure of H₂O?

Correct Answer
verified

Double and triple bonds form because

Correct Answer
verified

The correct name for the compound N₂O₃ is

Correct Answer
verified

How many valence electrons does carbon have?

Correct Answer
verified

Identify each of the following compounds as covalent or ionic. -potassium oxide

Correct Answer
verified

Exam 6: Ionic and Molecular Compounds

Which of the following elements has the lowest electronegativity?

Correct AnswerverifiedShow Answer

The formula for a molecule formed from N and Cl would be

Correct AnswerverifiedShow Answer

What is the correct formula for the oxide ion?

Correct AnswerverifiedShow Answer

How many valence electrons are in the electron-dot structure of H2O?

Correct AnswerverifiedShow Answer

Which of the following elements does NOT exist as a diatomic molecule?

Correct AnswerverifiedShow Answer

What is the formula of a compound that contains Na+ and PO₄ 3- ions?

Correct AnswerverifiedShow Answer

The shape of the carbon tetrachloride molecule is

Correct AnswerverifiedShow Answer

The ammonia molecule ( NH3) is

Correct AnswerverifiedShow Answer

Which of the following compounds contains an ionic bond?

Correct AnswerverifiedShow Answer

How many valence electrons are in the electron-dot structures for the elements in group 3A(13) ?

Correct AnswerverifiedShow Answer

The ion of aluminum is

Correct AnswerverifiedShow Answer

Identify each of the following compounds as covalent or ionic. -sodium fluoride

Correct AnswerverifiedShow Answer

Fe2(SO₄) 3 is called

Correct AnswerverifiedShow Answer

How many lone pairs of electrons are in the electron-dot structure of H2O?

Correct AnswerverifiedShow Answer

Double and triple bonds form because

Correct AnswerverifiedShow Answer

The correct name for the compound N2O3 is

Correct AnswerverifiedShow Answer

How many valence electrons does carbon have?

Correct AnswerverifiedShow Answer

Identify each of the following compounds as covalent or ionic. -potassium oxide

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

How many valence electrons are in the electron-dot structure of H₂O?

Correct Answer
verified

Correct Answer
verified

What is the formula of a compound that contains Na⁺ and PO₄ ^3- ions?

Correct Answer
verified

Correct Answer
verified

The ammonia molecule ( NH₃) is

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Fe₂(SO₄) ₃ is called

Correct Answer
verified

How many lone pairs of electrons are in the electron-dot structure of H₂O?

Correct Answer
verified

Correct Answer
verified

The correct name for the compound N₂O₃ is

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified