Question 1

What is the correct Lewis structure for an oxygen molecule?

Accepted Answer

The answer of What is the correct Lewis structure for...

Question 2

Boron trifluoride, BF3, is a corrosive material with a Lewis structure that shows boron to be two electrons short of a full octet. Which is the correct structure for BF3?

Accepted Answer

A)    
B)    
C)    
D) None of the above. 
A)    
B)    
C)    
D) None of the above.

Question 3

What is the geometry of the very simple molecule, carbon monoxide?

Accepted Answer

A) Linear 
B) Bent, planar 
C) Square planar 
D) Horizontal 
A) Linear 
B) Bent, planar 
C) Square planar 
D) Horizontal

Question 4

Draw for yourself the Lewis structure of ethene, C2H4, also called ethylene. How many double bonds does it have?

Accepted Answer

A) None 
B) 1 
C) 2 
D) 3 
A) None 
B) 1 
C) 2 
D) 3

Question 5

By what means do many illegal drugs affect the human brain?

Accepted Answer

They alter

Question 6

How is the N-Br bond described?

Accepted Answer

A) Pure covalent 
B) Polar covalent 
C) Nonpolar covalent 
D) Ionic 
A) Pure covalent 
B) Polar covalent 
C) Nonpolar covalent 
D) Ionic

Question 7

What shape does the ammonia molecule have?

Accepted Answer

A) Trigonal planar 
B) Square planar 
C) Trigonal pyramidal 
D) Square pyramidal 
A) Trigonal planar 
B) Square planar 
C) Trigonal pyramidal 
D) Square pyramidal

Question 8

The correct Lewis dot structure for potassium is what?

Accepted Answer

A) .K. 
B) .K 
C) .Pt 
D) .Pt. 
A) .K. 
B) .K 
C) .Pt 
D) .Pt.

Question 9

How many regions of electron density surround an atom that is the center of an octahedron?

Accepted Answer

A) 8 
B) 4 
C) 6 
D) 12 
A) 8 
B) 4 
C) 6 
D) 12

Question 10

In the sequence of elements: Br, F, C, Cl, which is the least electronegative?

Accepted Answer

A) Br 
B) F 
C) C 
D) Cl 
A) Br 
B) F 
C) C 
D) Cl

Question 11

What is the shape of the ammonia molecule, NH3?

Accepted Answer

Question 12

Why is platinum commonly used in electrochemistry?

Accepted Answer

A) Because it is a good conductor 
B) Because it carries current well 
C) Because it is generally inert 
D) Because it reacts easily 
A) Because it is a good conductor 
B) Because it carries current well 
C) Because it is generally inert 
D) Because it reacts easily

Question 13

Why do covalent bonds form between two atoms?

Accepted Answer

A) Because the polarity difference between the two is large enough for one atom to strip an electron from the other 
B) Because the polarity difference between the two is not large enough for one atom to strip an electron from the other 
C) Because the electronegativity difference between the two is large enough for one atom to strip an electron from the other 
D) Because the electronegativity difference between the two is not large enough for one atom to strip an electron from the other 
A) Because the polarity difference between the two is large enough for one atom to strip an electron from the other 
B) Because the polarity difference between the two is not large enough for one atom to strip an electron from the other 
C) Because the electronegativity difference between the two is large enough for one atom to strip an electron from the other 
D) Because the electronegativity difference between the two is not large enough for one atom to strip an electron from the other

Question 14

What is wrong with the Lewis structure: He=He?

Accepted Answer

A) Helium does not bond to another helium. 
B) Helium only forms a single bond to a second helium. 
C) Helium needs more electrons to form the bond. 
D) Nothing, the bonding is correct? 
A) Helium does not bond to another helium. 
B) Helium only forms a single bond to a second helium. 
C) Helium needs more electrons to form the bond. 
D) Nothing, the bonding is correct?

Question 15

After drawing the Lewis structure for phosphine, PH3, which should be structurally similar to ammonia, what shape should the molecule have?

Accepted Answer

A) A tetrahedron 
B) A triangular pyramid 
C) A square plane 
D) A square pyramid 
A) A tetrahedron 
B) A triangular pyramid 
C) A square plane 
D) A square pyramid

Question 16

Which of the following is the most polar molecule: methanol, acetone, or water?

Accepted Answer

The answer of Which of the following is the most...

Question 17

What must the minimum electronegativity difference be between two atoms to classify a bond as polar covalent?

Accepted Answer

The answer of What must the minimum electronegativity difference be...

Question 18

Any molecule that has a central atom with no lone pairs, and four other, equivalent atoms connected to it, has what shape?

Accepted Answer

A) Square 
B) Triangular 
C) Tetrahedral 
D) Flat 
A) Square 
B) Triangular 
C) Tetrahedral 
D) Flat

Question 19

How does an immunoassay function?

Accepted Answer

A) By having a small molecule fit into a larger one 
B) By having a small molecule deform as it is fitted into a larger one 
C) By having a large molecule fit into a smaller one 
D) By having a large molecule deform as it is fitted into a smaller one 
A) By having a small molecule fit into a larger one 
B) By having a small molecule deform as it is fitted into a larger one 
C) By having a large molecule fit into a smaller one 
D) By having a large molecule deform as it is fitted into a smaller one

Question 20

How are the ammonia molecules in cisplatin arranged?

Accepted Answer

They are in adjacent

What is the correct Lewis structure for an oxygen molecule?

Boron trifluoride, BF₃, is a corrosive material with a Lewis structure that shows boron to be two electrons short of a full octet. Which is the correct structure for BF₃?

What is the geometry of the very simple molecule, carbon monoxide?

Draw for yourself the Lewis structure of ethene, C₂H₄, also called ethylene. How many double bonds does it have?

By what means do many illegal drugs affect the human brain?

How is the N-Br bond described?

What shape does the ammonia molecule have?

The correct Lewis dot structure for potassium is what?

How many regions of electron density surround an atom that is the center of an octahedron?

In the sequence of elements: Br, F, C, Cl, which is the least electronegative?

What is the shape of the ammonia molecule, NH₃?

Why is platinum commonly used in electrochemistry?

Why do covalent bonds form between two atoms?

What is wrong with the Lewis structure: He=He?

After drawing the Lewis structure for phosphine, PH₃, which should be structurally similar to ammonia, what shape should the molecule have?

Which of the following is the most polar molecule: methanol, acetone, or water?

What must the minimum electronegativity difference be between two atoms to classify a bond as polar covalent?

Any molecule that has a central atom with no lone pairs, and four other, equivalent atoms connected to it, has what shape?

How does an immunoassay function?

How are the ammonia molecules in cisplatin arranged?

Understanding Our World With Chemistry

Matter: Properties, Changes and Measurements

Understanding Atoms

Bonding and Reactions

Aqueous Solutions: Part I

Aqueous Solutions: Part II

Organic Chemistry and Polymers

Chemistry of Fire and Heat

Chemistry of Explosions

Applications of Chemical Kinetics

Nuclear Chemistry: Energy, Medicine, Weapons, and Terrorism

Chemical Equilibrium

Introduction to Biochemistry

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Exam 5: Chemistry of Bonding: Structure and Function of Drug Molecules

What is the correct Lewis structure for an oxygen molecule?

Boron trifluoride, BF3, is a corrosive material with a Lewis structure that shows boron to be two electrons short of a full octet. Which is the correct structure for BF3?

What is the geometry of the very simple molecule, carbon monoxide?

Draw for yourself the Lewis structure of ethene, C2H4, also called ethylene. How many double bonds does it have?

By what means do many illegal drugs affect the human brain?

How is the N-Br bond described?

What shape does the ammonia molecule have?

The correct Lewis dot structure for potassium is what?

How many regions of electron density surround an atom that is the center of an octahedron?

In the sequence of elements: Br, F, C, Cl, which is the least electronegative?

What is the shape of the ammonia molecule, NH3?

Why is platinum commonly used in electrochemistry?

Why do covalent bonds form between two atoms?

What is wrong with the Lewis structure: He=He?

After drawing the Lewis structure for phosphine, PH3, which should be structurally similar to ammonia, what shape should the molecule have?

Which of the following is the most polar molecule: methanol, acetone, or water?

What must the minimum electronegativity difference be between two atoms to classify a bond as polar covalent?

Any molecule that has a central atom with no lone pairs, and four other, equivalent atoms connected to it, has what shape?

How does an immunoassay function?

How are the ammonia molecules in cisplatin arranged?

Understanding Our World With Chemistry

Matter: Properties, Changes and Measurements

Understanding Atoms

Bonding and Reactions

Aqueous Solutions: Part I

Aqueous Solutions: Part II

Organic Chemistry and Polymers

Chemistry of Fire and Heat

Chemistry of Explosions

Applications of Chemical Kinetics

Nuclear Chemistry: Energy, Medicine, Weapons, and Terrorism

Chemical Equilibrium

Introduction to Biochemistry

Filters

Boron trifluoride, BF₃, is a corrosive material with a Lewis structure that shows boron to be two electrons short of a full octet. Which is the correct structure for BF₃?

Draw for yourself the Lewis structure of ethene, C₂H₄, also called ethylene. How many double bonds does it have?

What is the shape of the ammonia molecule, NH₃?

After drawing the Lewis structure for phosphine, PH₃, which should be structurally similar to ammonia, what shape should the molecule have?