Question 1

When determining the shape of a molecule, count all electron groups around the central atom.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following is pyramidal and has an angle close to 109° around the central atom?

Accepted Answer

A) sulfur dioxide 
B) boron trifluoride 
C) ammonia 
D) both A and C 
A) sulfur dioxide 
B) boron trifluoride 
C) ammonia 
D) both A and C

Question 3

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity.
-CO32-

Accepted Answer

Question 4

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity.
-SO2

Accepted Answer

Question 5

Which of the following bonds will have the largest difference in electronegativity?

Accepted Answer

A) HBr 
B) NaF 
C) H2 
D) HS- 
A) HBr 
B) NaF 
C) H2 
D) HS-

Question 6

Carbon tetrachloride contains polar bonds and is a polar molecule.

Accepted Answer

A) True 
 B)False

Question 7

Carbon tetrachloride is polar.

Accepted Answer

A) True 
 B)False

Question 8

What is the steric number of the central atom in CH4?

Accepted Answer

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

Question 9

Match between columns
                        Premises: HCO₃-
HC₂-
NO+
NH₂-
NO₃-
NH₄+
CH₃-
CH₃+

Accepted Answer

The Answer of trigonal pyramid and trigonal planar and bent is...

Question 10

Which of the following pictures best illustrates a tetrahedral shape for the fictional molecule AB4?

Accepted Answer

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

Question 11

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity.
-CN-

Accepted Answer

Question 12

Which of the following statements is correct about the bent structure?

Accepted Answer

A) has three bonding electrons pairs with at least one lone pair around the central atom 
B) is the shape of the ammonia molecule 
C) has its angles around the central atom very close to the 105° 
D) All above statements are correct. 
A) has three bonding electrons pairs with at least one lone pair around the central atom 
B) is the shape of the ammonia molecule 
C) has its angles around the central atom very close to the 105° 
D) All above statements are correct.

Question 13

Match between columns
                        Premises: tetrahedral, four
bent, four
linear, one
trigonal planar, three
pyramidal, four

Accepted Answer

The Answer of 2 and 3 and 0 and 4 is...

Question 14

When drawing the three-dimensional structure diagram of a molecule the solid (not bold or dotted)line ________.

Accepted Answer

A) projects out from the page 
B) goes back behind the page 
C) the bond is in the plane of the page 
D) One cannot say unless the formula of the molecule is known. 
A) projects out from the page 
B) goes back behind the page 
C) the bond is in the plane of the page 
D) One cannot say unless the formula of the molecule is known.

Question 15

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity.
-PO43-

Accepted Answer

Question 16

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity.
-CBr4

Accepted Answer

Question 17

Which of the following is linear?

Accepted Answer

A) hydrogen chloride 
B) ethane, C2H6 
C) ethene, C2H4 
D) ammonia 
A) hydrogen chloride 
B) ethane, C2H6 
C) ethene, C2H4 
D) ammonia

Question 18

The angle around the central atom in the pyramidal structure is very close to that of the tetrahedral one.

Accepted Answer

A) True 
 B)False

Question 19

In the VSEPR model the multiple bond is treated as a single electron group, just the way a single bond is treated.

Accepted Answer

A) True 
 B)False

Question 20

The angle around nitrogen in the ammonium ion is ________.

Accepted Answer

A) 60° 
B) 90° 
C) 109° 
D) 120° 
A) 60° 
B) 90° 
C) 109° 
D) 120°

When determining the shape of a molecule, count all electron groups around the central atom.

Which of the following is pyramidal and has an angle close to 109° around the central atom?

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity. -CO₃²^-

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity. -SO₂

Which of the following bonds will have the largest difference in electronegativity?

Carbon tetrachloride contains polar bonds and is a polar molecule.

Carbon tetrachloride is polar.

What is the steric number of the central atom in CH₄?

Which of the following pictures best illustrates a tetrahedral shape for the fictional molecule AB₄?

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity. -CN^-

Which of the following statements is correct about the bent structure?

When drawing the three-dimensional structure diagram of a molecule the solid (not bold or dotted)line ________.

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity. -PO₄³^-

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity. -CBr₄

Which of the following is linear?

The angle around the central atom in the pyramidal structure is very close to that of the tetrahedral one.

In the VSEPR model the multiple bond is treated as a single electron group, just the way a single bond is treated.

The angle around nitrogen in the ammonium ion is ________.

What Is Chemistry

The Numerical Side of Chemistry

The Evolution of Atomic Theory

The Modern Model of the Atom

Chemical Bonding and Nomenclature

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

Electron Transfer in Chemical Reactions

What If There Were No Intermolecular Forces the Ideal Gas

Solutions

When Reactants Turn Into Products

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters

Exam 6: The Shape of Molecules

When determining the shape of a molecule, count all electron groups around the central atom.

Which of the following is pyramidal and has an angle close to 109° around the central atom?

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity. -CO32-

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity. -SO2

Which of the following bonds will have the largest difference in electronegativity?

Carbon tetrachloride contains polar bonds and is a polar molecule.

Carbon tetrachloride is polar.

What is the steric number of the central atom in CH4?

Which of the following pictures best illustrates a tetrahedral shape for the fictional molecule AB4?

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity. -CN-

Which of the following statements is correct about the bent structure?

When drawing the three-dimensional structure diagram of a molecule the solid (not bold or dotted)line ________.

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity. -PO43-

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity. -CBr4

Which of the following is linear?

The angle around the central atom in the pyramidal structure is very close to that of the tetrahedral one.

In the VSEPR model the multiple bond is treated as a single electron group, just the way a single bond is treated.

The angle around nitrogen in the ammonium ion is ________.

What Is Chemistry

The Numerical Side of Chemistry

The Evolution of Atomic Theory

The Modern Model of the Atom

Chemical Bonding and Nomenclature

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

Electron Transfer in Chemical Reactions

What If There Were No Intermolecular Forces the Ideal Gas

Solutions

When Reactants Turn Into Products

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity. -CO₃²^-

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity. -SO₂

What is the steric number of the central atom in CH₄?

Which of the following pictures best illustrates a tetrahedral shape for the fictional molecule AB₄?

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity. -CN^-

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity. -PO₄³^-

Judge whether or not the molecule or polyatomic ion shown is polar or non-polar. Draw a dipole vector to indicate the direction of any net polarity. -CBr₄