Question 1

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. 
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.

Question 2

How many valence electrons does carbon have?

Accepted Answer

A) one 
B) two 
C) three 
D) four 
E) five 
A) one 
B) two 
C) three 
D) four 
E) five

Question 3

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

Question 4

What is the correct formula for the oxide ion?

Accepted Answer

A) O2- 
B) O- 
C) O+ 
D) O2+ 
E) O₃+ 
A) O2- 
B) O- 
C) O+ 
D) O2+ 
E) O₃+

Question 5

Which of the following elements has the lowest electronegativity?

Accepted Answer

A) Li 
B) C 
C) N 
D) O 
E) F 
A) Li 
B) C 
C) N 
D) O 
E) F

Question 6

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 7

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

Accepted Answer

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

Question 8

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

Accepted Answer

A) hydrogen 
B) nitrogen 
C) chlorine 
D) oxygen 
E) carbon 
A) hydrogen 
B) nitrogen 
C) chlorine 
D) oxygen 
E) carbon

Question 9

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) Na3P 
A) Na3PO₄ 
B) NaPO₄ 
C) Na2PO₃ 
D) Na3PO₃ 
E) Na3P

Question 10

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) 6 
A) 1 
B) 2 
C) 3 
D) 4 
E) 6

Question 11

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

Accepted Answer

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

Question 12

Which of the following compounds contains an ionic bond?

Accepted Answer

A) NH3 
B) H2O 
C) CaO 
D) H2 
E) CH4 
A) NH3 
B) H2O 
C) CaO 
D) H2 
E) CH4

Question 13

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

Accepted Answer

A) 2 
B) 4 
C) 6 
D) 8 
E) 10 
A) 2 
B) 4 
C) 6 
D) 8 
E) 10

Question 14

The shape of the carbon tetrachloride molecule is

Accepted Answer

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

Question 15

The ion of aluminum is

Accepted Answer

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

Question 16

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) 4 
A) 0 
B) 1 
C) 2 
D) 3 
E) 4

Question 17

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. 
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.

Question 18

Fe2(SO₄)3 is called

Accepted Answer

A) iron sulfate. 
B) iron(II)sulfate. 
C) iron(III)sulfate. 
D) diiron trisulfate. 
E) iron trisulfate. 
A) iron sulfate. 
B) iron(II)sulfate. 
C) iron(III)sulfate. 
D) diiron trisulfate. 
E) iron trisulfate.

Exam 6: Ionic and Molecular Compounds

Double and triple bonds form because

How many valence electrons does carbon have?

The correct name for the compound N2O3 is

What is the correct formula for the oxide ion?

Which of the following elements has the lowest electronegativity?

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

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

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

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

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

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

Which of the following compounds contains an ionic bond?

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

The shape of the carbon tetrachloride molecule is

The ion of aluminum is

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

The ammonia molecule ( NH3) is

Fe2(SO₄)3 is called

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Filters

The correct name for the compound N₂O₃ is

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

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

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

The ammonia molecule ( NH₃) is

Fe₂(SO₄)₃ is called