Question 1

How many electrons are there in the valence shell of the oxygen atom of water?

Accepted Answer

A)  2
B)  4
C)  6
D)  8E) A) and B)
F) A) and D)

Question 2

Circle all of the sp2 hybridized atoms in the following molecular structure.

Accepted Answer

Question 3

Which atomic orbitals overlap to form the carbon-carbon  σ\sigmaσ and  π\piπ bonding molecular orbitals of ethene, H2C=CH2?

Accepted Answer

A)  C2sp3 + C2sp3, and C2p + C2p
B)  C2sp2 + C2sp2, and C2sp2 + C2sp2
C)  C2sp2 + C2sp2, and C2p + C2p
D)  C2sp3 + C2sp3, and C2sp2 + C2sp2 E) A) and D)
F) B) and C)

Question 4

The approximate H-C-H bond angle in methane is ______°.

Accepted Answer

The answer of The approximate H-C-H bond angle in methane...

Question 5

Which atomic orbitals overlap to form the carbon-hydrogen  σ\sigmaσ bonding molecular orbitals of ethene, H2C=CH2?

Accepted Answer

A)  C2p + H1s
B)  C2sp + H1s
C)  C2sp2 + H1s
D)  C2sp3 + H1s E) None of the above
F) B) and D)

Question 6

Which of the following is an ionic bond?

Accepted Answer

A)  F-F
B)  C-H
C)  Li-O
D)  C-NE) None of the above
F) A) and D)

Question 7

Which of the following compounds is a carboxylic ester?

Accepted Answer

A)  CH3CH2COOH
B)  CH3CH2OCH3
C)  CH3CH2COOCH3
D)  CH3CH2COCH3E) B) and C)
F) A) and C)

Question 8

Which of the following molecules has a molecular dipole moment?

Accepted Answer

A)  CO2
B)  BF3
C)  NH3
D)  CH4E) B) and C)
F) None of the above

Question 9

Which of the following is trigonal planar?

Accepted Answer

A)  boron trifluoride, BF3
B)  methyl anion, CH3-
C)  methane, CH4
D)  ammonia, NH3E) A) and B)
F) A) and C)

Question 10

There are eight valence in a methyl anion, CH3-.

Accepted Answer

A) True 
 B)False

Question 11

Circle and name the functional groups in the following molecule.

Accepted Answer

The answer of Circle and name the functional groups in...

Question 12

What is the approximate value of the length of the C ≡\equiv≡ C bond in ethyne, HC ≡\equiv≡ CH?

Accepted Answer

A)  121 pm
B)  134 pm
C)  142 pm
D)  154 pm E) A) and B)
F) A) and C)

Question 13

What is the approximate H-C-O bond angle in formaldehyde, H2C=O?

Accepted Answer

A)  90 ∘\circ∘ 
B)  109 ∘\circ∘ 
C)  120 ∘\circ∘ 
D)  180 ∘\circ∘  E) All of the above
F) None of the above

Question 14

The formal charges in the complex should below are 0 on each H, -1 on N, and +1 on B.

Accepted Answer

A) True 
 B)False

Question 15

What is the approximate C-C-C bond angle in propene, CH3CH=CH2?

Accepted Answer

A)  90 ∘\circ∘ 
B)  109 ∘\circ∘ 
C)  120 ∘\circ∘ 
D)  180 ∘\circ∘  E) B) and D)
F) B) and C)

Question 16

The percent s character in an sp2 hybridized orbital is approximately 33%.

Accepted Answer

A) True 
 B)False

Question 17

Different compounds with the same molecular formula are called __________.

Accepted Answer

The answer of Different compounds with the same molecular formula...

Question 18

Which of the following is a tertiary alcohol?

Accepted Answer

A)  CH3CH2OCH3
B)  (CH3) 3COH
C)  (CH3) 2CHOHWhat is the correct assignment of the naD) None of the above
E) All of the above

Question 19

Consider the following structural formula.  The following is a resonance structure.

Accepted Answer

A) True 
 B)False

Question 20

Draw bond-line structures of all of the ketones that have the formula C5H10O.

Accepted Answer

Exam 1: Covalent Bonding and Shapes of Molecules

Consider the following structural formula. The following is a resonance structure.

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Which atomic orbitals overlap to form the carbon-carbon σ\sigmaσ and π\piπ bonding molecular orbitals of ethene, H2C=CH2?

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Which of the following is trigonal planar?

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The percent s character in an sp2 hybridized orbital is approximately 33%.

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Which of the following compounds is a carboxylic ester?

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What is the approximate H-C-O bond angle in formaldehyde, H2C=O?

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The formal charges in the complex should below are 0 on each H, -1 on N, and +1 on B.

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Which of the following is an ionic bond?

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Circle all of the sp2 hybridized atoms in the following molecular structure.

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Draw bond-line structures of all of the ketones that have the formula C5H10O.

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Which of the following is a tertiary alcohol?

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The approximate H-C-H bond angle in methane is ______°.

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What is the approximate C-C-C bond angle in propene, CH3CH=CH2?

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Different compounds with the same molecular formula are called __________.

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Which atomic orbitals overlap to form the carbon-hydrogen σ\sigmaσ bonding molecular orbitals of ethene, H2C=CH2?

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How many electrons are there in the valence shell of the oxygen atom of water?

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Circle and name the functional groups in the following molecule.

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What is the approximate value of the length of the C ≡\equiv≡ C bond in ethyne, HC ≡\equiv≡ CH?

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Which of the following molecules has a molecular dipole moment?

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There are eight valence in a methyl anion, CH3-.

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Which atomic orbitals overlap to form the carbon-carbon $\sigma$ and $\pi$ bonding molecular orbitals of ethene, H₂C=CH₂?

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The percent s character in an sp² hybridized orbital is approximately 33%.

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What is the approximate H-C-O bond angle in formaldehyde, H₂C=O?

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Circle all of the sp² hybridized atoms in the following molecular structure.

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Draw bond-line structures of all of the ketones that have the formula C₅H₁₀O.

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What is the approximate C-C-C bond angle in propene, CH₃CH=CH₂?

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Which atomic orbitals overlap to form the carbon-hydrogen $\sigma$ bonding molecular orbitals of ethene, H₂C=CH₂?

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What is the approximate value of the length of the C $\equiv$ C bond in ethyne, HC $\equiv$ CH?

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There are eight valence in a methyl anion, CH₃^-.

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