Question 1

Which of the following has a tetrahedral electron pair geometry surrounding the central atom?
(i)PH3
(ii)BH3
(iii)BeH2
(iv)OF2

Accepted Answer

A) i only 
B) ii only 
C) iv only 
D) i and ii 
E) i and iv 
A) i only 
B) ii only 
C) iv only 
D) i and ii 
E) i and iv E

Question 2

Which of the following is the best Lewis diagram for HCO3-?

Accepted Answer

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

Question 3

Which of the following molecules is/are polar?
(i)HF
(ii)BH3
(iii)CBr2F2
(iv)PF3

Accepted Answer

A) ii only 
B) i and ii 
C) ii and iv 
D) i,iii,and iv 
E) i,ii,iii,and iv 
A) ii only 
B) i and ii 
C) ii and iv 
D) i,iii,and iv 
E) i,ii,iii,and iv D

Question 4

Consider the following general wedge-and-dash diagram:   What is the molecular geometry around the central atom of this molecule?

Accepted Answer

A) Linear 
B) Tetrahedral 
C) Trigonal planar 
D) Bent 
E) Trigonal pyramidal 
A) Linear 
B) Tetrahedral 
C) Trigonal planar 
D) Bent 
E) Trigonal pyramidal

Question 5

Which of the following compounds is an ether?

Accepted Answer

A) C6H12 
B) CH3OH 
C) CH3CH2COOH 
D) CH3CH2CH3 
E) None is an ether. 
A) C6H12 
B) CH3OH 
C) CH3CH2COOH 
D) CH3CH2CH3 
E) None is an ether.

Question 6

Which of the following wedge-and-dash diagrams best illustrates the molecular geometry of C2H6?

Accepted Answer

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

Question 7

What is the electron pair geometry surrounding the boron atom in BH3?

Accepted Answer

A) Trigonal planar 
B) Linear 
C) Angular (Bent) 
D) Trigonal pyramid 
E) Tetrahedral 
A) Trigonal planar 
B) Linear 
C) Angular (Bent) 
D) Trigonal pyramid 
E) Tetrahedral

Question 8

What is the molecular geometry surrounding the carbon atom in CH4?

Accepted Answer

A) Tetrahedral 
B) Angular (bent) 
C) Trigonal pyramid 
D) Linear 
E) Trigonal planar 
A) Tetrahedral 
B) Angular (bent) 
C) Trigonal pyramid 
D) Linear 
E) Trigonal planar

Question 9

Which of the following is the best Lewis diagram for CH3Br?

Accepted Answer

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

Question 10

Which of the following statements is/are correct?
(i)A molecule is nonpolar if it contains only nonpolar bonds
(ii)A polar molecule is one in which there is an asymmetrical distribution of charge.
(iii)If the central atom in a molecule has no lone pairs and all the atoms bonded to it are identical,the molecule is nonpolar.

Accepted Answer

A) i only 
B) ii only 
C) iii only 
D) i and iii 
E) All statements are correct 
A) i only 
B) ii only 
C) iii only 
D) i and iii 
E) All statements are correct

Question 11

Which of the following types of compounds best describes organic compounds?

Accepted Answer

A) Carbon compounds 
B) Molecular compounds 
C) Ionic compounds 
D) Covalent compounds 
E) Ring compounds 
A) Carbon compounds 
B) Molecular compounds 
C) Ionic compounds 
D) Covalent compounds 
E) Ring compounds

Question 12

Which of the following molecular geometries yields molecules which must be nonpolar?

Accepted Answer

A) Linear 
B) Tetrahedral 
C) Trigonal planar 
D) All yield molecules which must be nonpolar 
E) None yields molecules which must be nonpolar 
A) Linear 
B) Tetrahedral 
C) Trigonal planar 
D) All yield molecules which must be nonpolar 
E) None yields molecules which must be nonpolar

Question 13

Consider the following general wedge-and-dash diagram:   Which of the following has this structure?

Accepted Answer

A) BF3 
B) CH2O 
C) AlCl3 
D) COCl2 
E) PH3 
A) BF3 
B) CH2O 
C) AlCl3 
D) COCl2 
E) PH3

Question 14

Consider the following general wedge-and-dash diagrams. (i)  (ii) 
(iii) 
Each consists of a central atom bonded to 2 or 4 terminal atoms that are identical to one another. The central atom is different from the terminal atoms. Which of these molecules is/are polar?

Accepted Answer

A) i only 
B) ii only 
C) iii only 
D) ii and iii 
E) i,ii,and iii 
A) i only 
B) ii only 
C) iii only 
D) ii and iii 
E) i,ii,and iii

Question 15

Which of the following is the best Lewis diagram for HCO2-?

Accepted Answer

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

Question 16

Which of the following molecular models has the same molecular geometry as that surrounding the oxygen atom in OF2?

Accepted Answer

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

Question 17

Which of the following has a(n)bent (angular)molecular geometry?

Accepted Answer

A) OF2 
B) CO2 
C) H3O+ 
D) IO3- 
E) NH4+ 
A) OF2 
B) CO2 
C) H3O+ 
D) IO3- 
E) NH4+

Question 18

What is the electron pair geometry shown in the following model?

Accepted Answer

A) Tetrahedral 
B) Angular (Bent) 
C) Linear 
D) Trigonal planar 
E) Trigonal pyramid 
A) Tetrahedral 
B) Angular (Bent) 
C) Linear 
D) Trigonal planar 
E) Trigonal pyramid

Question 19

Which of the following best describes hydrocarbons?

Accepted Answer

A) Alkanes in which a hydrogen atom is replaced by a hydroxyl group 
B) Binary compounds of carbon and hydrogen 
C) Organic compounds containing water and carbon 
D) Covalently bonded carbon compounds which have intermolecular force attractions to hydrogen compounds 
E) Compounds which are formed by the reaction of a naturally occurring carbon-containing substance and water 
A) Alkanes in which a hydrogen atom is replaced by a hydroxyl group 
B) Binary compounds of carbon and hydrogen 
C) Organic compounds containing water and carbon 
D) Covalently bonded carbon compounds which have intermolecular force attractions to hydrogen compounds 
E) Compounds which are formed by the reaction of a naturally occurring carbon-containing substance and water

Question 20

A molecule consists of a second period central atom with three other atoms singly bonded to it.There is one lone pair of electrons on the central atom,and the other atoms have lone pairs.What is the molecular geometry around the central atom?

Accepted Answer

A) Linear 
B) Trigonal planar 
C) Tetrahedral 
D) Trigonal pyramid 
E) Angular (bent) 
A) Linear 
B) Trigonal planar 
C) Tetrahedral 
D) Trigonal pyramid 
E) Angular (bent)

Which of the following has a tetrahedral electron pair geometry surrounding the central atom? (i)PH₃ (ii)BH₃ (iii)BeH₂ (iv)OF₂

Which of the following is the best Lewis diagram for HCO₃^-?

Which of the following molecules is/are polar? (i)HF (ii)BH₃ (iii)CBr₂F₂ (iv)PF₃

Consider the following general wedge-and-dash diagram: What is the molecular geometry around the central atom of this molecule?

Which of the following compounds is an ether?

Which of the following wedge-and-dash diagrams best illustrates the molecular geometry of C₂H₆?

What is the electron pair geometry surrounding the boron atom in BH₃?

What is the molecular geometry surrounding the carbon atom in CH₄?

Which of the following is the best Lewis diagram for CH₃Br?

Which of the following types of compounds best describes organic compounds?

Which of the following molecular geometries yields molecules which must be nonpolar?

Consider the following general wedge-and-dash diagram: Which of the following has this structure?

Consider the following general wedge-and-dash diagrams. (i) (ii) (iii) Each consists of a central atom bonded to 2 or 4 terminal atoms that are identical to one another. The central atom is different from the terminal atoms. Which of these molecules is/are polar?

Which of the following is the best Lewis diagram for HCO₂^-?

Which of the following molecular models has the same molecular geometry as that surrounding the oxygen atom in OF₂?

Which of the following has a(n)bent (angular)molecular geometry?

What is the electron pair geometry shown in the following model?

Which of the following best describes hydrocarbons?

A molecule consists of a second period central atom with three other atoms singly bonded to it.There is one lone pair of electrons on the central atom,and the other atoms have lone pairs.What is the molecular geometry around the central atom?

Matter and Energy

Measurement and Chemical Calculations

Introduction to Gases

Atomic Theory: the Nuclear Model of the Atom

Chemical Nomenclature

Chemical Formula Relationships

Chemical Reactions

Chemical Change

Quantity Relationships in Chemical Reactions

Atomic Theory: the Quantum Model of the Atom

Chemical Bonding

The Ideal Gas Law and Its Applications

Gases, liquids, and Solids

Solutions

Acid-Base Proton-Transferreactions

Chemical Equilibrium

Oxidation-Reduction Redoxreactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

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Exam 13: Structure and Shape

Which of the following has a tetrahedral electron pair geometry surrounding the central atom? (i)PH3 (ii)BH3 (iii)BeH2 (iv)OF2

Which of the following is the best Lewis diagram for HCO3-?

Which of the following molecules is/are polar? (i)HF (ii)BH3 (iii)CBr2F2 (iv)PF3

Consider the following general wedge-and-dash diagram: What is the molecular geometry around the central atom of this molecule?

Which of the following compounds is an ether?

Which of the following wedge-and-dash diagrams best illustrates the molecular geometry of C2H6?

What is the electron pair geometry surrounding the boron atom in BH3?

What is the molecular geometry surrounding the carbon atom in CH4?

Which of the following is the best Lewis diagram for CH3Br?

Which of the following types of compounds best describes organic compounds?

Which of the following molecular geometries yields molecules which must be nonpolar?

Consider the following general wedge-and-dash diagram: Which of the following has this structure?

Consider the following general wedge-and-dash diagrams. (i) (ii) (iii) Each consists of a central atom bonded to 2 or 4 terminal atoms that are identical to one another. The central atom is different from the terminal atoms. Which of these molecules is/are polar?

Which of the following is the best Lewis diagram for HCO2-?

Which of the following molecular models has the same molecular geometry as that surrounding the oxygen atom in OF2?

Which of the following has a(n)bent (angular)molecular geometry?

What is the electron pair geometry shown in the following model?

Which of the following best describes hydrocarbons?

A molecule consists of a second period central atom with three other atoms singly bonded to it.There is one lone pair of electrons on the central atom,and the other atoms have lone pairs.What is the molecular geometry around the central atom?

Matter and Energy

Measurement and Chemical Calculations

Introduction to Gases

Atomic Theory: the Nuclear Model of the Atom

Chemical Nomenclature

Chemical Formula Relationships

Chemical Reactions

Chemical Change

Quantity Relationships in Chemical Reactions

Atomic Theory: the Quantum Model of the Atom

Chemical Bonding

The Ideal Gas Law and Its Applications

Gases, liquids, and Solids

Solutions

Acid-Base Proton-Transferreactions

Chemical Equilibrium

Oxidation-Reduction Redoxreactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

Which of the following has a tetrahedral electron pair geometry surrounding the central atom? (i)PH₃ (ii)BH₃ (iii)BeH₂ (iv)OF₂

Which of the following is the best Lewis diagram for HCO₃^-?

Which of the following molecules is/are polar? (i)HF (ii)BH₃ (iii)CBr₂F₂ (iv)PF₃

Which of the following wedge-and-dash diagrams best illustrates the molecular geometry of C₂H₆?

What is the electron pair geometry surrounding the boron atom in BH₃?

What is the molecular geometry surrounding the carbon atom in CH₄?

Which of the following is the best Lewis diagram for CH₃Br?

Which of the following is the best Lewis diagram for HCO₂^-?

Which of the following molecular models has the same molecular geometry as that surrounding the oxygen atom in OF₂?