Question 1

Which of the following compounds is pure covalent?

Accepted Answer

A)  H₂CO 
B)  CL₂SO 
C)  O₂ 
D)  CO 
A)  H₂CO 
B)  CL₂SO 
C)  O₂ 
D)  CO

Question 2

Match each molecule with its shape of the central atom.
-boron trifluoride

Accepted Answer

A) linear 
B) trigonal plamar 
C) tetrahedral 
D) bent 
E) trigonal planar
F)pyramidal 
A) linear 
B) trigonal plamar 
C) tetrahedral 
D) bent 
E) trigonal planar
F)pyramidal

Question 3

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 4

Match each molecule with an angle around the central atom.
-nitrogen trifluoride

Accepted Answer

A) 105° 
B) 107° 
C) 120° 
D) 118° 
E) 109.5°
F)180° 
A) 105° 
B) 107° 
C) 120° 
D) 118° 
E) 109.5°
F)180°

Question 5

Match each molecule with an angle around the central atom.
-carbon tetrachloride

Accepted Answer

A) 105° 
B) 107° 
C) 120° 
D) 118° 
E) 109.5°
F)180° 
A) 105° 
B) 107° 
C) 120° 
D) 118° 
E) 109.5°
F)180°

Question 6

Use VSEPR theory to predict the shape of the molecule or complex ion shown. Draw a Lewis dot structure to assist you in determining these shapes.
-CHCl3

Accepted Answer

Question 7

When drawing the three-dimensional structure diagram of a molecule the dotted line ________.

Accepted Answer

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

Question 8

The angle around carbon in hydrogen cyanide is ________.

Accepted Answer

A)  105° 
B)  109.5° 
C)  120° 
D)  180° 
A)  105° 
B)  109.5° 
C)  120° 
D)  180°

Question 9

Which of the following compounds would you expect to be the most polar molecule?

Accepted Answer

A)  H₂S 
B)  H₂Se 
C)  H₂Te 
D)  H₂O 
A)  H₂S 
B)  H₂Se 
C)  H₂Te 
D)  H₂O

Question 10

Match each molecule with its shape of the central atom.
-phosphorus trihydride

Accepted Answer

A) linear 
B) trigonal plamar 
C) tetrahedral 
D) bent 
E) trigonal planar
F)pyramidal 
A) linear 
B) trigonal plamar 
C) tetrahedral 
D) bent 
E) trigonal planar
F)pyramidal

Question 11

Identify each of the molecules as polar or non-polar.
-NH?

Accepted Answer

A) non-polar 
B) polar 
A) non-polar 
B) polar

Question 12

Identify each of the molecules as polar or non-polar.
-SO?

Accepted Answer

A) non-polar 
B) polar 
A) non-polar 
B) polar

Question 13

Match the shape and number of electron groups at the central atom with the number of bonding pairs of electrons on the central atom.
-linear, two

Accepted Answer

A) 4 
B) 3 
C) 2 
A) 4 
B) 3 
C) 2

Question 14

Which of the following molecules is bent?

Accepted Answer

A)  water 
B)  sulfur dioxide 
C)  carbon dioxide 
D)  both A and B 
A)  water 
B)  sulfur dioxide 
C)  carbon dioxide 
D)  both A and B

Question 15

Match each molecule with an angle around the central atom.
-hydrogen cyanide

Accepted Answer

A) 105° 
B) 107° 
C) 120° 
D) 118° 
E) 109.5°
F)180° 
A) 105° 
B) 107° 
C) 120° 
D) 118° 
E) 109.5°
F)180°

Question 16

What is the molecular shape of CC14?

Accepted Answer

A)  tetrahedral 
B)  pyramidal 
C)  linear 
D)  bent 
A)  tetrahedral 
B)  pyramidal 
C)  linear 
D)  bent

Question 17

Which compound listed below has a bond angle of 180° around the central atom?

Accepted Answer

A)  H₂O 
B)  CO₂ 
C)  CC14 
D)  NH₃ 
A)  H₂O 
B)  CO₂ 
C)  CC14 
D)  NH₃

Question 18

When drawing the three-dimensional structure diagram of a molecule the bold line ________.

Accepted Answer

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

Question 19

Which of the following compounds is non-polar?

Accepted Answer

A)  SO₂ 
B)  CH₂O 
C)  CS2 
D)  SOCL₂ 
A)  SO₂ 
B)  CH₂O 
C)  CS2 
D)  SOCL₂

Question 20

Match each molecule with its shape of the central atom.
-sulfur trioxide

Accepted Answer

A) linear 
B) trigonal plamar 
C) tetrahedral 
D) bent 
E) trigonal planar
F)pyramidal 
A) linear 
B) trigonal plamar 
C) tetrahedral 
D) bent 
E) trigonal planar
F)pyramidal

Which of the following compounds is pure covalent?

Match each molecule with its shape of the central atom. -boron trifluoride

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

Match each molecule with an angle around the central atom. -nitrogen trifluoride

Match each molecule with an angle around the central atom. -carbon tetrachloride

Use VSEPR theory to predict the shape of the molecule or complex ion shown. Draw a Lewis dot structure to assist you in determining these shapes. -CHCl₃

When drawing the three-dimensional structure diagram of a molecule the dotted line ________.

The angle around carbon in hydrogen cyanide is ________.

Which of the following compounds would you expect to be the most polar molecule?

Match each molecule with its shape of the central atom. -phosphorus trihydride

Identify each of the molecules as polar or non-polar. -NH?

Identify each of the molecules as polar or non-polar. -SO?

Match the shape and number of electron groups at the central atom with the number of bonding pairs of electrons on the central atom. -linear, two

Which of the following molecules is bent?

Match each molecule with an angle around the central atom. -hydrogen cyanide

What is the molecular shape of CC14?

Which compound listed below has a bond angle of 180° around the central atom?

When drawing the three-dimensional structure diagram of a molecule the bold line ________.

Which of the following compounds is non-polar?

Match each molecule with its shape of the central atom. -sulfur trioxide

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

Which of the following compounds is pure covalent?

Match each molecule with its shape of the central atom. -boron trifluoride

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

Match each molecule with an angle around the central atom. -nitrogen trifluoride

Match each molecule with an angle around the central atom. -carbon tetrachloride

Use VSEPR theory to predict the shape of the molecule or complex ion shown. Draw a Lewis dot structure to assist you in determining these shapes. -CHCl3

When drawing the three-dimensional structure diagram of a molecule the dotted line ________.

The angle around carbon in hydrogen cyanide is ________.

Which of the following compounds would you expect to be the most polar molecule?

Match each molecule with its shape of the central atom. -phosphorus trihydride

Identify each of the molecules as polar or non-polar. -NH?

Identify each of the molecules as polar or non-polar. -SO?

Match the shape and number of electron groups at the central atom with the number of bonding pairs of electrons on the central atom. -linear, two

Which of the following molecules is bent?

Match each molecule with an angle around the central atom. -hydrogen cyanide

What is the molecular shape of CC14?

Which compound listed below has a bond angle of 180° around the central atom?

When drawing the three-dimensional structure diagram of a molecule the bold line ________.

Which of the following compounds is non-polar?

Match each molecule with its shape of the central atom. -sulfur trioxide

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

Use VSEPR theory to predict the shape of the molecule or complex ion shown. Draw a Lewis dot structure to assist you in determining these shapes. -CHCl₃