Question 1

A diatomic molecule contains ________. I. atoms of two different elements bonded together with a covalent bond
II. two atoms of the same element bonded together with a covalent bond
III. two lone pairs of electrons

Accepted Answer

A) I only 
B) II only 
C) III only 
D) I or II only 
E) I and III only

Question 2

What is the Lewis structure for chloroethylene (C2H3Cl)?

Accepted Answer

A)   
B)   
C)   
D)

Question 3

A bond formed between the elements hydrogen and bromine would be considered an ionic bond.

Accepted Answer

A) True 
 B)False

Question 4

Atoms with seven valence electrons typically form one covalent bond.

Accepted Answer

A) True 
 B)False

Question 5

A molecule is a discrete group of atoms held together by covalent bonds.

Accepted Answer

A) True 
 B)False

Question 6

A double bond is counted as two groups in the valence shell electron pair repulsion (VSEPR)theory.

Accepted Answer

A) True 
 B)False

Question 7

The molecule below is a polar molecule.

Accepted Answer

A) True 
 B)False

Question 8

A bond between a carbon atom and a nitrogen atom is a polar covalent bond.

Accepted Answer

A) True 
 B)False

Question 9

Which compound has the greatest number of valence electrons?

Accepted Answer

A) H2S 
B) CH4 
C) NH3 
D) H2O 
E) All of the molecules have the same number of valence electrons.

Question 10

Estimate the bond angles around the sulfur atom in the structure shown below.

Accepted Answer

A) 90° 
B) 109.5° 
C) 120° 
D) 180°

Question 11

The symbol δ- is given to the more electronegative atom in a polar bond.

Accepted Answer

A) True 
 B)False

Question 12

In general,a ________ bond will be one in which the electronegativity difference between two atoms is 0.5 units or greater.

Accepted Answer

The answer of In general,a ________ bond will be one...

Question 13

Which atom has the lowest electronegativity?

Accepted Answer

A) Al 
B) S 
C) Se 
D) Rb 
E) F

Question 14

The structures shown below are resonance structures of sulfur dioxide.  and

Accepted Answer

A) True 
 B)False

Question 15

The covalent bond between chlorine and iodine is a polar one. Which of the following properly represents the direction of polarity in this bond?

Accepted Answer

A) .δ+ Cl-I δ- 
B) .δ- Cl-I δ+ 
C) .+ Cl-I - 
D) .- Cl-I +

Question 16

In the Lewis structure of a molecule,oxygen atoms typically have ________ lone pair(s)of electrons.

Accepted Answer

The answer of In the Lewis structure of a molecule,oxygen...

Question 17

What is the chemical formula for the following Lewis structure?

Accepted Answer

The answer of What is the chemical formula for the...

Question 18

Aspartic acid is an amino acid used to synthesize proteins. There are ________ atoms with a trigonal planar geometry in the aspartic acid structure shown here.

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 19

Which bond has the polarity incorrectly labeled?

Accepted Answer

A) .δ+ H-Cl δ- 
B) .δ+ O-C δ- 
C) .δ+ Cl-F δ- 
D) .δ- Cl-Br δ+ 
E) .δ- F-O δ+

Question 20

Which of the following compounds is not classified as covalent?

Accepted Answer

A) CH4 
B) SF6 
C) PBr3 
D) MgCl2 
E) None of the choices are correct.

Exam 4: Covalent Compounds

A diatomic molecule contains ________. I. atoms of two different elements bonded together with a covalent bond II. two atoms of the same element bonded together with a covalent bond III. two lone pairs of electrons

What is the Lewis structure for chloroethylene (C₂H₃Cl) ?

A bond formed between the elements hydrogen and bromine would be considered an ionic bond.

Atoms with seven valence electrons typically form one covalent bond.

A molecule is a discrete group of atoms held together by covalent bonds.

A double bond is counted as two groups in the valence shell electron pair repulsion (VSEPR)theory.

The molecule below is a polar molecule.

A bond between a carbon atom and a nitrogen atom is a polar covalent bond.

Which compound has the greatest number of valence electrons?

Estimate the bond angles around the sulfur atom in the structure shown below.

The symbol δ^- is given to the more electronegative atom in a polar bond.

In general,a ________ bond will be one in which the electronegativity difference between two atoms is 0.5 units or greater.

Which atom has the lowest electronegativity?

The structures shown below are resonance structures of sulfur dioxide. and

The covalent bond between chlorine and iodine is a polar one. Which of the following properly represents the direction of polarity in this bond?

In the Lewis structure of a molecule,oxygen atoms typically have ________ lone pair(s)of electrons.

What is the chemical formula for the following Lewis structure?

Aspartic acid is an amino acid used to synthesize proteins. There are ________ atoms with a trigonal planar geometry in the aspartic acid structure shown here.

Which bond has the polarity incorrectly labeled?

Which of the following compounds is not classified as covalent?

Exam 4: Covalent Compounds

A diatomic molecule contains ________. I. atoms of two different elements bonded together with a covalent bond II. two atoms of the same element bonded together with a covalent bond III. two lone pairs of electrons

What is the Lewis structure for chloroethylene (C2H3Cl) ?

A bond formed between the elements hydrogen and bromine would be considered an ionic bond.

Atoms with seven valence electrons typically form one covalent bond.

A molecule is a discrete group of atoms held together by covalent bonds.

A double bond is counted as two groups in the valence shell electron pair repulsion (VSEPR)theory.

The molecule below is a polar molecule.

A bond between a carbon atom and a nitrogen atom is a polar covalent bond.

Which compound has the greatest number of valence electrons?

Estimate the bond angles around the sulfur atom in the structure shown below.

The symbol δ- is given to the more electronegative atom in a polar bond.

In general,a ________ bond will be one in which the electronegativity difference between two atoms is 0.5 units or greater.

Which atom has the lowest electronegativity?

The structures shown below are resonance structures of sulfur dioxide. and

The covalent bond between chlorine and iodine is a polar one. Which of the following properly represents the direction of polarity in this bond?

In the Lewis structure of a molecule,oxygen atoms typically have ________ lone pair(s)of electrons.

What is the chemical formula for the following Lewis structure?

Aspartic acid is an amino acid used to synthesize proteins. There are ________ atoms with a trigonal planar geometry in the aspartic acid structure shown here.

Which bond has the polarity incorrectly labeled?

Which of the following compounds is not classified as covalent?

What is the Lewis structure for chloroethylene (C₂H₃Cl) ?

The symbol δ^- is given to the more electronegative atom in a polar bond.