Question 1

A double bond between two atoms,A and B,________.

Accepted Answer

A) is longer than a single bond between the same two atoms. 
B) has a lower bond energy than a single bond between the same two atoms. 
C) arises when two electrons are transferred from A to B. 
D) consists of two electrons shared between A and B. 
E) consists of four electrons shared between A and B.

Question 2

In the molecule BeF2,the beryllium atom is an exception to the octet rule.

Accepted Answer

A) True 
 B)False

Question 3

Which formula represents ammonia?

Accepted Answer

A) Al3 
B) AlH3 
C) NH4+ 
D) NH3 
E) AN4

Question 4

What is the name of Fe2(SO4)3 in the Stock system?

Accepted Answer

A) iron monosulfuric acid 
B) iron(II)sulfate 
C) iron(III)sulfate 
D) iron trisulfate 
E) iron(II)trisulfate

Question 5

How many bonding electrons are present in the Lewis structure for the bicarbonate ion,shown below?

Accepted Answer

A) 4 
B) 5 
C) 8 
D) 10 
E) 24

Question 6

Baking soda consists of the ionic compound sodium bicarbonate.What is the formula of this compound?

Accepted Answer

A) Na(CO3)2 
B) Na2CO3 
C) NaBiCO3 
D) NaHCO3 
E) Na2HCO3

Question 7

What is the Lewis structure of methanethiol,CH3SH?

Accepted Answer

A) 
 
B) 
 
C) 
 
D) 
 
E)

Question 8

What is the formula of the sulfate ion?

Accepted Answer

A) SO4- 
B) SO3- 
C) SO42- 
D) SO32- 
E) SO22-

Question 9

In the molecule AX2,the central atom A has two lone pairs of electrons in addition to the two bond pairs in the A-X bonds.What is the shape of this molecule?

Accepted Answer

A) bent,bond angle close to 109.5° 
B) bent,bond angle close to 120° 
C) linear 
D) trigonal planar 
E) trigonal pyramidal

Question 10

How many dots are present in the Lewis symbol for the fluorine atom?

Accepted Answer

A) 5 
B) 6 
C) 7 
D) 8 
E) 10

Question 11

What is the formula of the compound sulfur trioxide?

Accepted Answer

A) S3O 
B) SO3 
C) S(O2)3 
D) S3O2 
E) S3O2?

Question 12

What does it mean if an atom is said to have a high electronegativity?

Accepted Answer

A) The atom requires a large amount of energy to remove an electron from its structure. 
B) The atom is highly susceptible to losing a valence electron. 
C) The atom has a strong attraction for electrons in a chemical bond. 
D) The atom releases a large amount of energy when it gains an electron. 
E) The atom has more electrons around it than necessary; the atom has an expanded octet.

Question 13

Which of the following Lewis structures has a possible resonance structure?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E

Question 14

Which of the following bonds would be the most polar?

Accepted Answer

A) P-F 
B) N-F 
C) S-Cl 
D) Br-Br 
E) F-F

Question 15

The drug "lithium" is often prescribed to treat mental illness.It is not the element lithium,but the ionic compound Li2CO3,that is actually administered.What is the name of this compound?

Accepted Answer

A) dilithium carbon trioxide 
B) lithium carbide 
C) lithium carboxide 
D) lithium carbonate 
E) lithium tricarbonate

Question 16

What is the formula of the ionic compound formed when ions of calcium and nitrogen combine?

Accepted Answer

A) CaN 
B) CaN2 
C) Ca2N 
D) Ca3N2 
E) Ca2N3

Question 17

What is wrong with the Lewis structure shown for sulfur trioxide,SO3?

Accepted Answer

A) Oxygen,not sulfur,should be the central atom. 
B) Sulfur should have 10 electrons around it instead of 8,to show its expanded octet. 
C) The structure shows 26 valence electrons,but there should only be 24. 
D) There are too many bonding electrons shown. 
E) The structure should show each oxygen atom with a double bond to the sulfur atom.

Question 18

Assuming reactions between the following pairs of elements,which pair is most likely to form a covalent compound?

Accepted Answer

A) lithium and iodine 
B) sodium and oxygen 
C) calcium and chlorine 
D) copper and tin 
E) carbon and oxygen

Question 19

What are the two principal classes of bonding called?

Accepted Answer

A) ionic bonding and nuclear bonding 
B) covalent bonding and hydrogen bonding 
C) hydrogen bonding and ionic bonding 
D) polar bonding and ionic bonding 
E) ionic bonding and covalent bonding

Question 20

There are three atoms of iodine represented in the formula NaIO3.

Accepted Answer

A) True 
 B)False

Exam 3: Structure and Properties of Ionic and Covalent Compounds

A double bond between two atoms,A and B,________.

In the molecule BeF₂,the beryllium atom is an exception to the octet rule.

Which formula represents ammonia?

What is the name of Fe₂(SO₄) ₃ in the Stock system?

How many bonding electrons are present in the Lewis structure for the bicarbonate ion,shown below?

Baking soda consists of the ionic compound sodium bicarbonate.What is the formula of this compound?

What is the Lewis structure of methanethiol,CH₃SH?

What is the formula of the sulfate ion?

In the molecule AX₂,the central atom A has two lone pairs of electrons in addition to the two bond pairs in the A-X bonds.What is the shape of this molecule?

How many dots are present in the Lewis symbol for the fluorine atom?

What is the formula of the compound sulfur trioxide?

What does it mean if an atom is said to have a high electronegativity?

Which of the following Lewis structures has a possible resonance structure?

Which of the following bonds would be the most polar?

The drug "lithium" is often prescribed to treat mental illness.It is not the element lithium,but the ionic compound Li₂CO₃,that is actually administered.What is the name of this compound?

What is the formula of the ionic compound formed when ions of calcium and nitrogen combine?

What is wrong with the Lewis structure shown for sulfur trioxide,SO₃?

Assuming reactions between the following pairs of elements,which pair is most likely to form a covalent compound?

What are the two principal classes of bonding called?

There are three atoms of iodine represented in the formula NaIO₃.

Exam 3: Structure and Properties of Ionic and Covalent Compounds

A double bond between two atoms,A and B,________.

In the molecule BeF2,the beryllium atom is an exception to the octet rule.

Which formula represents ammonia?

What is the name of Fe2(SO4) 3 in the Stock system?

How many bonding electrons are present in the Lewis structure for the bicarbonate ion,shown below?

Baking soda consists of the ionic compound sodium bicarbonate.What is the formula of this compound?

What is the Lewis structure of methanethiol,CH3SH?

What is the formula of the sulfate ion?

In the molecule AX2,the central atom A has two lone pairs of electrons in addition to the two bond pairs in the A-X bonds.What is the shape of this molecule?

How many dots are present in the Lewis symbol for the fluorine atom?

What is the formula of the compound sulfur trioxide?

What does it mean if an atom is said to have a high electronegativity?

Which of the following Lewis structures has a possible resonance structure?

Which of the following bonds would be the most polar?

The drug "lithium" is often prescribed to treat mental illness.It is not the element lithium,but the ionic compound Li2CO3,that is actually administered.What is the name of this compound?

What is the formula of the ionic compound formed when ions of calcium and nitrogen combine?

What is wrong with the Lewis structure shown for sulfur trioxide,SO3?

Assuming reactions between the following pairs of elements,which pair is most likely to form a covalent compound?

What are the two principal classes of bonding called?

There are three atoms of iodine represented in the formula NaIO3.

In the molecule BeF₂,the beryllium atom is an exception to the octet rule.

What is the name of Fe₂(SO₄) ₃ in the Stock system?

What is the Lewis structure of methanethiol,CH₃SH?

In the molecule AX₂,the central atom A has two lone pairs of electrons in addition to the two bond pairs in the A-X bonds.What is the shape of this molecule?

The drug "lithium" is often prescribed to treat mental illness.It is not the element lithium,but the ionic compound Li₂CO₃,that is actually administered.What is the name of this compound?

What is wrong with the Lewis structure shown for sulfur trioxide,SO₃?

There are three atoms of iodine represented in the formula NaIO₃.