Question 1

The difference in electronegativity between H and in HF is higher than that between H and Cl in HCl.

Accepted Answer

A) True 
 B)False

Question 2

Match each molecule with an angle around the central atom.
-ammonium ion

Accepted Answer

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

Question 3

Match each of the ions with its corresponding shape.
-HC?-

Accepted Answer

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

Question 4

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

Accepted Answer

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

Question 5

Match the shape and number of electron groups at the central atom with the number of bonding pairs of electrons on the central atom.
-trigonal planar, three

Accepted Answer

A)  4
B)  3
C)  2 B

Question 6

What is the steric number of the central atom in boron trichloride?

Accepted Answer

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

Question 7

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

Accepted Answer

A)  non-polar
B)  polar B

Question 8

The pyramidal structure is the tetrahedral arrangement minus a bond but with a lone pair.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following compounds is polar?

Accepted Answer

A)   N₂
B)   O₂
C)   SOCL₂
D)   CO₂ C

Question 10

Carbon tetrachloride is polar.

Accepted Answer

A) True 
 B)False

Question 11

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.
-PH₃

Accepted Answer

The answer of Use VSEPR theory to predict the shape...

Question 12

Bonds are regions of negative charge and therefore repel each other.

Accepted Answer

A) True 
 B)False

Question 13

Match each of the ions with its corresponding shape.
-CH?-

Accepted Answer

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

Question 14

In a molecule having four pairs of electrons around the central atom and a pyramidal shape, how many bonding pairs of electrons does the central atom have?

Accepted Answer

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

Question 15

Match each of the ions with its corresponding shape.
-CH?+

Accepted Answer

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

Question 16

Match each molecule with its shape of the central atom.
-carbon disulfide

Accepted Answer

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

Question 17

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

Accepted Answer

A)   
B)   
C)   
D)

Question 18

Which of the following compounds is polar?

Accepted Answer

A)   SO₃
B)   CO₂
C)   CS2
D)   H₂CO

Question 19

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.
-NO₃-

Accepted Answer

The answer of Use VSEPR theory to predict the shape...

Question 20

Which of the following sulfur-containing compounds or ions is not polar?

Accepted Answer

A)   SO₃
B)   H₂S
C)   HS-
D)   SOCL₂

Exam 6: The Shape of Molecules

The difference in electronegativity between H and in HF is higher than that between H and Cl in HCl.

Correct AnswerverifiedShow Answer

Match each molecule with an angle around the central atom. -ammonium ion

Correct AnswerverifiedShow Answer

Match each of the ions with its corresponding shape. -HC?-

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Match the shape and number of electron groups at the central atom with the number of bonding pairs of electrons on the central atom. -trigonal planar, three

Correct AnswerverifiedB

What is the steric number of the central atom in boron trichloride?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedB

The pyramidal structure is the tetrahedral arrangement minus a bond but with a lone pair.

Correct AnswerverifiedShow Answer

Which of the following compounds is polar?

Correct AnswerverifiedC

Carbon tetrachloride is polar.

Correct AnswerverifiedShow Answer

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. -PH₃

Correct AnswerverifiedShow Answer

Bonds are regions of negative charge and therefore repel each other.

Correct AnswerverifiedShow Answer

Match each of the ions with its corresponding shape. -CH?-

Correct AnswerverifiedShow Answer

In a molecule having four pairs of electrons around the central atom and a pyramidal shape, how many bonding pairs of electrons does the central atom have?

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Match each of the ions with its corresponding shape. -CH?+

Correct AnswerverifiedShow Answer

Match each molecule with its shape of the central atom. -carbon disulfide

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following compounds is polar?

Correct AnswerverifiedShow Answer

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. -NO₃-

Correct AnswerverifiedShow Answer

Which of the following sulfur-containing compounds or ions is not polar?

Correct AnswerverifiedShow Answer

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