Question 1

Phosphoryl iodide is used in the preparation of organophosphorus derivatives and phosphate esters. Select the Lewis structure for POI3 that minimizes formal charges.

Accepted Answer

A)   3 that minimizes formal charges. 
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E)   3 that minimizes formal charges. 
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Question 2

Use VSEPR theory to decide which one of the following molecules and ions will have a trigonal pyramidal geometry. (The central atom is always first in the formula.)

Accepted Answer

A)   PCl3
B)   BF3
C)   SO3
D)   BrF3
E)   CO32-

Question 3

Which of the following molecules has a net dipole moment?

Accepted Answer

A)   BeCl2
B)   SF2
C)   KrF2
D)   CO2
E)   CCl4

Question 4

According to VSEPR theory, a molecule with the general formula AX3E will have a _____ molecular shape.

Accepted Answer

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

Question 5

Predict the ideal bond angles in GeCl4 using the molecular shape given by the VSEPR theory.

Accepted Answer

A)   90°
B)   109°
C)   120°
D)   180°
E)   < 90°

Question 6

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 pyramidal

Question 7

According to VSEPR theory, a molecule with the general formula AX5 will have a ______ molecular shape.

Accepted Answer

A)   tetrahedral
B)   trigonal planar
C)   trigonal pyramidal
D)   trigonal bipyramidal
E)   see-saw

Question 8

Which one of the following Lewis structures is definitely incorrect?

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 9

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)   BrF3
B)   H3O+
C)   PCl3
D)   SO42-
E)   SF4

Question 10

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 pyramidal

Question 11

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

Accepted Answer

A)   
B)   
C)   
D)   
E)

Question 12

What is the molecular shape of ClF4- as predicted by the VSEPR theory?

Accepted Answer

A)   square pyramidal
B)   square planar
C)   see-saw
D)   octahedral
E)   tetrahedral

Question 13

Predict the ideal bond angles in FNO using the molecular shape given by the VSEPR theory.

Accepted Answer

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

Question 14

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.

Question 15

What is the molecular shape of ClF2- as predicted by the VSEPR theory?

Accepted Answer

A)   linear
B)   bent
C)   see-saw
D)   T-shaped
E)   L-shaped

Question 16

All possible resonance structures contribute equally to the resonance hybrid.

Accepted Answer

A) True 
 B)False

Question 17

Predict the ideal bond angles in AsCl3 using the molecular shape given by the VSEPR theory.

Accepted Answer

A)   90°
B)   109°
C)   120°
D)   180°
E)   between 110 and 120°

Question 18

In which one of the following species is the central atom (the first atom in the formula)  likely to violate the octet rule?

Accepted Answer

A)   BF4-
B)   XeO3
C)   SiCl4
D)   NH3
E)   CH2Cl2

Question 19

What is the molecular shape of N2O as predicted by the VSEPR theory? 2O as predicted by the VSEPR theory?   A)  trigonal pyramidal B)  trigonal planar C)  angular D)  bent E)  linear" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

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

Question 20

According to VSEPR theory, a molecule with the general formula AX3 will have a ______ molecular shape.

Accepted Answer

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

Exam 10: The Shapes of Molecules

What is the molecular shape of ClF4- as predicted by the VSEPR theory?

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Use VSEPR theory to decide which one of the following molecules and ions will have a trigonal pyramidal geometry. (The central atom is always first in the formula.)

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According to VSEPR theory, a molecule with the general formula AX5 will have a ______ molecular shape.

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According to VSEPR theory, a molecule with the general formula AX3 will have a ______ molecular shape.

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Which one of the following Lewis structures is definitely incorrect?

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

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Predict the ideal bond angles in GeCl4 using the molecular shape given by the VSEPR theory.

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Which of the following molecules has a net dipole moment?

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What is the molecular shape of ClF2- as predicted by the VSEPR theory?

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

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

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According to VSEPR theory, a molecule with the general formula AX3E will have a _____ molecular shape.

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Predict the ideal bond angles in FNO using the molecular shape given by the VSEPR theory.

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Phosphoryl iodide is used in the preparation of organophosphorus derivatives and phosphate esters. Select the Lewis structure for POI3 that minimizes formal charges.

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

All possible resonance structures contribute equally to the resonance hybrid.

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 in AsCl3 using the molecular shape given by the VSEPR theory.

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In which one of the following species is the central atom (the first atom in the formula) likely to violate the octet rule?

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What is the molecular shape of N2O as predicted by the VSEPR theory?

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What is the molecular shape of ClF_4- as predicted by the VSEPR theory?

Correct Answer
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According to VSEPR theory, a molecule with the general formula AX₅ will have a ______ molecular shape.

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According to VSEPR theory, a molecule with the general formula AX₃ will have a ______ molecular shape.

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

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Predict the ideal bond angles in GeCl₄ using the molecular shape given by the VSEPR theory.

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What is the molecular shape of ClF₂^- as predicted by the VSEPR theory?

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

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

Correct Answer
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According to VSEPR theory, a molecule with the general formula AX₃E will have a _____ molecular shape.

Correct Answer
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Phosphoryl iodide is used in the preparation of organophosphorus derivatives and phosphate esters. Select the Lewis structure for POI₃ that minimizes formal charges.

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Predict the ideal bond angles in AsCl₃ using the molecular shape given by the VSEPR theory.

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What is the molecular shape of N₂O as predicted by the VSEPR theory?

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