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


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

F) B) and D)
G) A) and B)

Correct Answer

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Consider the following general wedge-and-dash diagram: Consider the following general wedge-and-dash diagram: Which of the following has this structure? A) BF<sub>3</sub> B) CH<sub>2</sub>O C) AlCl<sub>3</sub> D) COCl<sub>2</sub> E) PH<sub>3</sub> Which of the following has this structure?


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

F) B) and C)
G) All of the above

Correct Answer

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


A) Which of the following is the best Lewis diagram for HCO<sub>2</sub><sup>-</sup>? A) B) C) D) E)
B) Which of the following is the best Lewis diagram for HCO<sub>2</sub><sup>-</sup>? A) B) C) D) E)
C) Which of the following is the best Lewis diagram for HCO<sub>2</sub><sup>-</sup>? A) B) C) D) E)
D) Which of the following is the best Lewis diagram for HCO<sub>2</sub><sup>-</sup>? A) B) C) D) E)
E) Which of the following is the best Lewis diagram for HCO<sub>2</sub><sup>-</sup>? A) B) C) D) E)

F) A) and B)
G) A) and C)

Correct Answer

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


A) Which of the following wedge-and-dash diagrams best illustrates the molecular geometry of C<sub>2</sub>H<sub>6</sub>? A) B) C) D) E)
B) Which of the following wedge-and-dash diagrams best illustrates the molecular geometry of C<sub>2</sub>H<sub>6</sub>? A) B) C) D) E)
C) Which of the following wedge-and-dash diagrams best illustrates the molecular geometry of C<sub>2</sub>H<sub>6</sub>? A) B) C) D) E)
D) Which of the following wedge-and-dash diagrams best illustrates the molecular geometry of C<sub>2</sub>H<sub>6</sub>? A) B) C) D) E)
E) Which of the following wedge-and-dash diagrams best illustrates the molecular geometry of C<sub>2</sub>H<sub>6</sub>? A) B) C) D) E)

F) C) and D)
G) C) and E)

Correct Answer

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Which of the following compounds is an ether?


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

F) B) and D)
G) B) and E)

Correct Answer

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


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

F) C) and E)
G) A) and E)

Correct Answer

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Which of the following molecular geometries 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

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

Correct Answer

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


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

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

Correct Answer

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D

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


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

F) A) and E)
G) A) and B)

Correct Answer

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E

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


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

F) C) and D)
G) None of the above

Correct Answer

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Which of the following best describes hydrocarbons?


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

F) C) and E)
G) C) and D)

Correct Answer

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


A) Which of the following molecular models has the same molecular geometry as that surrounding the oxygen atom in OF<sub>2</sub>? A) B) C) D) E)
B) Which of the following molecular models has the same molecular geometry as that surrounding the oxygen atom in OF<sub>2</sub>? A) B) C) D) E)
C) Which of the following molecular models has the same molecular geometry as that surrounding the oxygen atom in OF<sub>2</sub>? A) B) C) D) E)
D) Which of the following molecular models has the same molecular geometry as that surrounding the oxygen atom in OF<sub>2</sub>? A) B) C) D) E)
E) Which of the following molecular models has the same molecular geometry as that surrounding the oxygen atom in OF<sub>2</sub>? A) B) C) D) E)

F) B) and D)
G) B) and E)

Correct Answer

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Consider the following general wedge-and-dash diagrams. (i) 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? A) i only B) ii only C) iii only D) ii and iii E) i,ii,and iii (ii) 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? A) i only B) ii only C) iii only D) ii and iii E) i,ii,and iii (iii) 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? A) i only B) ii only C) iii only D) ii and iii E) i,ii,and 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?


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

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

Correct Answer

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


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

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

Correct Answer

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


A) Which of the following is the best Lewis diagram for CH<sub>3</sub>Br? A) B) C) D) E)
B) Which of the following is the best Lewis diagram for CH<sub>3</sub>Br? A) B) C) D) E)
C) Which of the following is the best Lewis diagram for CH<sub>3</sub>Br? A) B) C) D) E)
D) Which of the following is the best Lewis diagram for CH<sub>3</sub>Br? A) B) C) D) E)
E) Which of the following is the best Lewis diagram for CH<sub>3</sub>Br? A) B) C) D) E)

F) B) and D)
G) None of the above

Correct Answer

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Consider the following general wedge-and-dash diagram: Consider the following general wedge-and-dash diagram: What is the molecular geometry around the central atom of this molecule? A) Linear B) Tetrahedral C) Trigonal planar D) Bent E) Trigonal pyramidal What is the molecular geometry around the central atom of this molecule?


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

F) All of the above
G) B) and E)

Correct Answer

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

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

Correct Answer

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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?


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

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

Correct Answer

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


A) Which of the following is the best Lewis diagram for HCO<sub>3</sub><sup>-</sup>? A) B) C) D) E)
B) Which of the following is the best Lewis diagram for HCO<sub>3</sub><sup>-</sup>? A) B) C) D) E)
C) Which of the following is the best Lewis diagram for HCO<sub>3</sub><sup>-</sup>? A) B) C) D) E)
D) Which of the following is the best Lewis diagram for HCO<sub>3</sub><sup>-</sup>? A) B) C) D) E)
E) Which of the following is the best Lewis diagram for HCO<sub>3</sub><sup>-</sup>? A) B) C) D) E)

F) A) and D)
G) None of the above

Correct Answer

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E

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.


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

F) A) and B)
G) All of the above

Correct Answer

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