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Which of the following molecules has polar covalent bonds?


A) MgO
B) NH3
C) Cl2
D) NaBr

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

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Which of the following compounds are non-polar? Which of the following compounds are non-polar? A) I,IV B) I,II C) II,III D) II,IV


A) I,IV
B) I,II
C) II,III
D) II,IV

E) A) and B)
F) A) and D)

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Which atomic orbitals overlap to form the C-H s bonding molecular orbitals of ethylene,H2C=CH2?


A) C2p + H1s
B) Csp + H1s
C) Csp3 + H1s
D) Csp2 + H1s

E) A) and B)
F) None of the above

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Which atomic orbitals overlap to form the carbon-carbon s and p bonding molecular orbitals of ethylene,H2C=CH2?


A) Csp3 + Csp3,and C2p + C2p
B) Csp3 + Csp3,and Csp2 + Csp2
C) Csp2 + Csp2,and C2p + C2p
D) Csp2 + Csp2,and Csp2 + Csp2

E) None of the above
F) All of the above

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How many different isomers are there for a compound having the molecular formula C3H6O?


A) 4
B) 5
C) 6
D) 7

E) A) and D)
F) B) and D)

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How many constitutional isomers are there for a molecule having the molecular formula C3H6?


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

E) A) and B)
F) A) and D)

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In which of the following ions does carbon have a formal charge? In which of the following ions does carbon have a formal charge? A) I B) II C) III D) None of these


A) I
B) II
C) III
D) None of these

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

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What 2 things will change between two resonance structures?


A) The position of multiple bonds and non-bonded electrons.
B) The position of multiple bonds and single bonds.
C) The placement of atoms and single bonds.
D) The placement of atoms and non-bonded electrons.

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

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What is the ground-state electronic configuration of a carbon atom?


A) 1s2,2s2,2p5
B) 1s2,2s2,2p2
C) 1s2,2s2,2p6
D) 1s2,2s2,2p4

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

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Which of the following is the appropriate conversion of (CH3) 4C to a skeletal structure? Which of the following is the appropriate conversion of (CH<sub>3</sub>) <sub>4</sub>C to a skeletal structure? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

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

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Which of the following is the appropriate conversion of (CH3) 2CHCH2CHClCH3 to a skeletal structure? Which of the following is the appropriate conversion of (CH<sub>3</sub>) <sub>2</sub>CHCH<sub>2</sub>CHClCH<sub>3</sub> to a skeletal structure? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) C) and D)
F) B) and C)

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Which of the following resonance structures is the least important contributor to the resonance hybrid of the formate anion,HCOO-? Which of the following resonance structures is the least important contributor to the resonance hybrid of the formate anion,HCOO<sup>-</sup>? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

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

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Which of the following Lewis structures is correct? Which of the following Lewis structures is correct? A) I,II B) I,III C) II,III D) III,IV


A) I,II
B) I,III
C) II,III
D) III,IV

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

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Avobenzone is an active ingredient in some common sunscreens.Which of the following is the correct molecular formula for avobenzone? Avobenzone is an active ingredient in some common sunscreens.Which of the following is the correct molecular formula for avobenzone? A) C<sub>22</sub>O<sub>22</sub>O<sub>3</sub> B) C<sub>20</sub>H<sub>22</sub>O<sub>3</sub> C) C<sub>21</sub>H<sub>23</sub>O<sub>3</sub> D) C<sub>20</sub>H<sub>24</sub>O<sub>3</sub>


A) C22O22O3
B) C20H22O3
C) C21H23O3
D) C20H24O3

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

Correct Answer

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What is the ground-state electronic configuration of a fluorine atom?


A) 1s2,2s2,2p2
B) 1s2,2s2,2p3
C) 1s2,2s2,2p4
D) 1s2,2s2,2p5

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

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Which of the following Lewis structures is correct? Which of the following Lewis structures is correct? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

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

Correct Answer

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Which compound contains the most polar bond? Which compound contains the most polar bond? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) B) and C)
F) None of the above

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