Question 1

Predict the ideal bond angles around carbon in C2I2 using the molecular shape given by the VSEPR theory.

Accepted Answer

A)  90°
B)  109°
C)  120°
D)  180°
E)  None of these choices are correct.F) All of the above
G) A) and C)

Question 2

Which one of the following Lewis structures is definitely incorrect?

Accepted Answer

A)  A
B)  B
C)  C
D)  D
E)  EF) A) and B)
G) All of the above

Question 3

Select the best Lewis structure for ClCN.

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) A) and B)
G) C) and E)

Question 4

Predict the ideal bond angles around nitrogen in N2F2 using the molecular shape given by the VSEPR theory. (The two N atoms are the central atoms.)

Accepted Answer

A)  90°
B)  109°
C)  120°
D)  180°
E)  between 120 and 180°F) B) and C)
G) B) and E)

Question 5

What is the molecular shape of BCl3 as predicted by the VSEPR theory?

Accepted Answer

A)  Linear
B)  Trigonal planar
C)  Bent
D)  Tetrahedral
E)  Trigonal pyramidalF) A) and E)
G) C) and D)

Question 6

Predict the actual bond angles in SF3+ using the VSEPR theory.

Accepted Answer

A)  more than 120°
B)  exactly 120°
C)  between 109° and 120°
D)  between 90° and 109°
E)  less than 90°F) B) and D)
G) B) and C)

Question 7

What is the molecular shape of the thiocyanate anion, SCN−, as predicted by the VSEPR theory? (Carbon is the central atom.)

Accepted Answer

A)  Linear
B)  Bent
C)  Angular
D)  Trigonal
E)  None of these choices are correct.F) B) and C)
G) B) and E)

Question 8

What is the molecular shape of ClCN as predicted by the VSEPR theory? (Carbon is the central atom.)

Accepted Answer

A)  Linear
B)  Bent
C)  Angular
D)  Trigonal
E)  None of these choices are correct.F) A) and B)
G) C) and D)

Question 9

What is the molecular shape of NO2− as predicted by the VSEPR theory?

Accepted Answer

A)  Linear
B)  Trigonal planar
C)  Bent
D)  Tetrahedral
E)  ResonantF) A) and C)
G) C) and D)

Question 10

According to VSEPR theory, a molecule with the general formula AX6 will have a __________ molecular shape.

Accepted Answer

A)  tetrahedral
B)  trigonal planar
C)  trigonal bipyramidal
D)  hexagonal
E)  octahedralF) A) and B)
G) C) and E)

Question 11

Use VSEPR theory to decide which one of the following ions and molecules is likely to be planar. (The central atom is always first in the formula.)

Accepted Answer

A)  BrF 3
B)  H 3O +
C)  PCl 3
D)  SO 4 2−
E)  SF 4F) A) and E)
G) C) and D)

Question 12

Use VSEPR theory to decide which one of the following molecules and ions will definitely have at least one 90° bond angle in it. (In each case except water, the central atom is the first one in the formula.)

Accepted Answer

A)  AlCl 4 −
B)  NH 3
C)  PCl 5
D)  CO 2
E)  H 2OF) A) and B)
G) A) and C)

Question 13

According to VSEPR theory, a molecule with the general formula AX2E will have a __________ molecular shape.

Accepted Answer

A)  bent
B)  see-saw
C)  trigonal planar
D)  T-shaped
E)  trigonal pyramidalF) A) and E)
G) B) and C)

Question 14

How many electron pairs are shared between the carbon atoms in C2H4?

Accepted Answer

A)  5
B)  4
C)  3
D)  2
E)  1F) All of the above
G) A) and B)

Question 15

What is the molecular shape of BeH2 as predicted by the VSEPR theory?

Accepted Answer

A)  Linear
B)  Bent
C)  Angular
D)  Trigonal
E)  None of these choices are correct.F) A) and D)
G) C) and D)

Question 16

What is the molecular shape of SCl3F as predicted by the VSEPR theory?

Accepted Answer

A)  Linear
B)  Bent
C)  See-saw
D)  T-shaped
E)  Trigonal pyramidalF) A) and E)
G) None of the above

Question 17

In a Lewis structure for a molecule or ion, the sum of the formal charges on the atoms is equal to the charge on the molecule or ion.

Accepted Answer

A) True 
 B)False

Question 18

According to VSEPR theory, a molecule with the general formula AX4E2 will have a __________ molecular shape.

Accepted Answer

A)  tetrahedral
B)  square pyramidal
C)  square planar
D)  octahedral
E)  see-sawF) A) and E)
G) D) and E)

Question 19

In which of the following does the nitrogen atom have a formal charge of −1?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) B) and E)
G) A) and B)

Question 20

Which one of the following molecules and ions will have a planar geometry?

Accepted Answer

A)  PCl 3
B)  BF 4 −
C)  XeF 4
D)  BrF 5
E)  H 3O +F) B) and D)
G) A) and D)

Exam 10: The Shapes of Molecules

What is the molecular shape of BeH2 as predicted by the VSEPR theory?

Correct AnswerverifiedShow Answer

Predict the actual bond angles in SF3+ using the VSEPR theory.

Correct AnswerverifiedShow Answer

Predict the ideal bond angles around nitrogen in N2F2 using the molecular shape given by the VSEPR theory. (The two N atoms are the central atoms.)

Correct AnswerverifiedShow Answer

In which of the following does the nitrogen atom have a formal charge of −1?

Correct AnswerverifiedShow Answer

Predict the ideal bond angles around carbon in C2I2 using the molecular shape given by the VSEPR theory.

Correct AnswerverifiedShow Answer

Which one of the following molecules and ions will have a planar geometry?

Correct AnswerverifiedShow Answer

What is the molecular shape of the thiocyanate anion, SCN−, as predicted by the VSEPR theory? (Carbon is the central atom.)

Correct AnswerverifiedShow Answer

In a Lewis structure for a molecule or ion, the sum of the formal charges on the atoms is equal to the charge on the molecule or ion.

Correct AnswerverifiedShow Answer

According to VSEPR theory, a molecule with the general formula AX2E will have a __________ molecular shape.

Correct AnswerverifiedShow Answer

According to VSEPR theory, a molecule with the general formula AX4E2 will have a __________ molecular shape.

Correct AnswerverifiedShow Answer

Which one of the following Lewis structures is definitely incorrect?

Correct AnswerverifiedShow Answer

What is the molecular shape of BCl3 as predicted by the VSEPR theory?

Correct AnswerverifiedShow Answer

What is the molecular shape of SCl3F as predicted by the VSEPR theory?

Correct AnswerverifiedShow Answer

What is the molecular shape of NO2− as predicted by the VSEPR theory?

Correct AnswerverifiedShow Answer

How many electron pairs are shared between the carbon atoms in C2H4?

Correct AnswerverifiedShow Answer

According to VSEPR theory, a molecule with the general formula AX6 will have a __________ molecular shape.

Correct AnswerverifiedShow Answer

Use VSEPR theory to decide which one of the following ions and molecules is likely to be planar. (The central atom is always first in the formula.)

Correct AnswerverifiedShow Answer

Select the best Lewis structure for ClCN.

Correct AnswerverifiedShow Answer

Use VSEPR theory to decide which one of the following molecules and ions will definitely have at least one 90° bond angle in it. (In each case except water, the central atom is the first one in the formula.)

Correct AnswerverifiedShow Answer

What is the molecular shape of ClCN as predicted by the VSEPR theory? (Carbon is the central atom.)

Correct AnswerverifiedShow Answer

What is the molecular shape of BeH₂as predicted by the VSEPR theory?

Correct Answer
verified

Predict the actual bond angles in SF₃⁺ using the VSEPR theory.

Correct Answer
verified

Predict the ideal bond angles around nitrogen in N₂F₂using the molecular shape given by the VSEPR theory. (The two N atoms are the central atoms.)

Correct Answer
verified

Correct Answer
verified

Predict the ideal bond angles around carbon in C₂I₂using the molecular shape given by the VSEPR theory.

Correct Answer
verified

Correct Answer
verified

What is the molecular shape of the thiocyanate anion, SCN⁻, as predicted by the VSEPR theory? (Carbon is the central atom.)

Correct Answer
verified

Correct Answer
verified

According to VSEPR theory, a molecule with the general formula AX₂E will have a __________ molecular shape.

Correct Answer
verified

According to VSEPR theory, a molecule with the general formula AX₄E₂will have a __________ molecular shape.

Correct Answer
verified

Correct Answer
verified

What is the molecular shape of BCl₃as predicted by the VSEPR theory?

Correct Answer
verified

What is the molecular shape of SCl₃F as predicted by the VSEPR theory?

Correct Answer
verified

What is the molecular shape of NO₂⁻ as predicted by the VSEPR theory?

Correct Answer
verified

How many electron pairs are shared between the carbon atoms in C₂H₄?

Correct Answer
verified

According to VSEPR theory, a molecule with the general formula AX₆ will have a __________ molecular shape.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified