Question 1

Atoms with the same number of protons but different numbers of neutrons are called ________.

Accepted Answer

The answer of Atoms with the same number of protons...

Question 2

What kind of molecular orbital (σ, σ*, π, or π*)results when the two atomic orbitals shown below interact in the manner indicated?

Accepted Answer

The answer of What kind of molecular orbital (σ, σ*,...

Question 3

Draw the shape of a 2p orbital.

Accepted Answer

The answer of Draw the shape of a 2p orbital....

Question 4

Ar, K+, Cl- are isoelectronic elements (elements with the same number of electrons). What orbital does the last electron occupy?

Accepted Answer

3p orbital

Question 5

Give the H-C-H bond angle in H2CO.

Accepted Answer

A)  60
B)  90
C)  109.5
D)  120
E)  180F) A) and B)
G) A) and C)

Question 6

Which of the following molecules does not exhibit a net dipole moment of zero?

Accepted Answer

A)  CO2
B)  CH4
C)  CCl4
D)  H2O
E)  SO3F) All of the above
G) B) and E)

Question 7

What are the formal charges on nitrogen and the starred oxygen atom in the following molecule?

Accepted Answer

A)  N = -1, O = 0
B)  N = +1, O = -1
C)  N = +1, O = +1
D)  N = -1, O = -1
E)  N= +1, O = 0F) C) and D)
G) All of the above

Question 8

The N-H single bond in methyl amine (CH3NH2) is a ________ bond formed by the overlap of a(n) ________ orbital on N and a(n) ________ orbital on H.

Accepted Answer

A)  σ; sp2; s
B)  σ ; sp3; s
C)  π ; sp3; s
D)  π ; sp2; p
E)  π ; p ; pF) D) and E)
G) C) and E)

Question 9

Which of the following statements correctly describes the third electron shell that surrounds the nucleus of an atom?

Accepted Answer

A)  The third shell contains only s and p atomic orbitals.
B)  The maximum number of electrons that can occupy the third shell is 18.
C)  The total number of atomic orbitals present in the third shell is 16.
D)  The third shell can contain f orbitals.
E)  All third shell elements must have d electrons.F) A) and B)
G) C) and E) B

Question 10

Identify the compound(s) that have a nonzero dipole moment.

Accepted Answer

A)  CH3NH2
B)  CO2
C)  CH3OCH3
D)  (CH3) 2C 3NH2 
B)  CO2 
C)  CH3OCH3 
D)  (CH3) 2C   C(CH3) 2 
E)  BCl3" class="answers-bank-image d-inline" rel="preload" > C(CH3) 2
E)  BCl3F) D) and E)
G) None of the above

Question 11

What is the CNN bond angle in the compound shown below?

Accepted Answer

A)  ~60°
B)  ~90°
C)  ~110°
D)  ~120°
E)  ~180°F) A) and E)
G) C) and D)

Question 12

The hydrogen-halogen bond becomes ________ and ________ as the size (atomic weight) of the halogen increases.

Accepted Answer

A)  longer, weaker
B)  longer, stronger
C)  shorter, weaker
D)  shorter, strongerE) A) and B)
F) None of the above

Question 13

Give the electronic configuration for N-3.

Accepted Answer

A)  1s22s2
B)  1s22s22p3
C)  1s22s22p4
D)  1s22s22p6
E)  1s22s22p63s1F) B) and C)
G) B) and D)

Question 14

Draw the Lewis structure for CH3N2+.

Accepted Answer

Question 15

Triethylamine [(CH3CH2) 3N] is a molecule in which the nitrogen atom is ________ hybridized and the CNC bond angle is ________.

Accepted Answer

A)  sp2, >109.5°
B)  sp2, 
C)  sp3, >109.5°
D)  sp3, 
E)  sp, 109.5°F) A) and B)
G) None of the above

Question 16

How many sp2 hybridized carbons are present in allene (H2C=C=CH2) ?

Accepted Answer

A)  0
B)  1
C)  1) 5
D)  2
E)  3F) A) and B)
G) A) and C)

Question 17

Using the symbol δ+and δ-, show the direction of the polarity in the indicated bond.

Accepted Answer

The answer of Using the symbol δ+and δ-, show the...

Question 18

Consider the interaction of two hydrogen 1s atomic orbitals of the same phase. Which of the statements below is an incorrect description of this interaction?

Accepted Answer

A)  A sigma bonding molecular orbital is formed.
B)  The molecular orbital formed is lower in energy than a hydrogen 1s atomic orbital.
C)  The molecular orbital formed has a node between the atoms.
D)  The molecular orbital formed is cylindrically symmetric.
E)  A maximum of two electrons may occupy the molecular orbital formed.F) A) and C)
G) A) and B)

Question 19

Draw the Kekulé structure and show the direction of the dipole moment for CH2Cl2.

Accepted Answer

Question 20

Draw condensed structures for the four compounds with formula C3H9N.

Accepted Answer

CH₃CH₂CH₂NH₂
C...

Exam 1: Remembering General Chemistry: Electronic Structure and Bonding

Atoms with the same number of protons but different numbers of neutrons are called ________.

Correct AnswerverifiedShow Answer

What kind of molecular orbital (σ, σ*, π, or π*)results when the two atomic orbitals shown below interact in the manner indicated?

Correct AnswerverifiedShow Answer

Draw the shape of a 2p orbital.

Correct AnswerverifiedShow Answer

Ar, K+, Cl- are isoelectronic elements (elements with the same number of electrons). What orbital does the last electron occupy?

Correct Answerverified3p orbital

Give the H-C-H bond angle in H2CO.

Correct AnswerverifiedShow Answer

Which of the following molecules does not exhibit a net dipole moment of zero?

Correct AnswerverifiedShow Answer

What are the formal charges on nitrogen and the starred oxygen atom in the following molecule?

Correct AnswerverifiedShow Answer

The N-H single bond in methyl amine (CH3NH2) is a ________ bond formed by the overlap of a(n) ________ orbital on N and a(n) ________ orbital on H.

Correct AnswerverifiedShow Answer

Which of the following statements correctly describes the third electron shell that surrounds the nucleus of an atom?

Correct AnswerverifiedB

Identify the compound(s) that have a nonzero dipole moment.

Correct AnswerverifiedShow Answer

What is the CNN bond angle in the compound shown below?

Correct AnswerverifiedShow Answer

The hydrogen-halogen bond becomes ________ and ________ as the size (atomic weight) of the halogen increases.

Correct AnswerverifiedShow Answer

Give the electronic configuration for N-3.

Correct AnswerverifiedShow Answer

Draw the Lewis structure for CH3N2+.

Correct AnswerverifiedShow Answer

Triethylamine [(CH3CH2) 3N] is a molecule in which the nitrogen atom is ________ hybridized and the CNC bond angle is ________.

Correct AnswerverifiedShow Answer

How many sp2 hybridized carbons are present in allene (H2C=C=CH2) ?

Correct AnswerverifiedShow Answer

Using the symbol δ+and δ-, show the direction of the polarity in the indicated bond.

Correct AnswerverifiedShow Answer

Consider the interaction of two hydrogen 1s atomic orbitals of the same phase. Which of the statements below is an incorrect description of this interaction?

Correct AnswerverifiedShow Answer

Draw the Kekulé structure and show the direction of the dipole moment for CH2Cl2.

Correct Answerverified11ea7d6e_065f_12e3_8568_a34d445fb275_TB1830_00_TB1830_00

Draw condensed structures for the four compounds with formula C3H9N.

Correct AnswerverifiedCH3CH2CH2NH2C...View AnswerShow Answer

Correct Answer
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What kind of molecular orbital (σ, σ, π, or π)results when the two atomic orbitals shown below interact in the manner indicated?

Correct Answer
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Ar, K⁺, Cl^- are isoelectronic elements (elements with the same number of electrons). What orbital does the last electron occupy?

Correct Answer
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3p orbital

Give the H-C-H bond angle in H₂CO.

Correct Answer
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The N-H single bond in methyl amine (CH₃NH₂) is a bond formed by the overlap of a(n) orbital on N and a(n) orbital on H.

Correct Answer
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B

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The hydrogen-halogen bond becomes and as the size (atomic weight) of the halogen increases.

Correct Answer
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Give the electronic configuration for N^-3.

Correct Answer
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Draw the Lewis structure for CH₃N₂⁺.

Correct Answer
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Triethylamine [(CH₃CH₂) ₃N] is a molecule in which the nitrogen atom is hybridized and the CNC bond angle is .

Correct Answer
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How many sp² hybridized carbons are present in allene (H₂C=C=CH₂) ?

Correct Answer
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Draw the Kekulé structure and show the direction of the dipole moment for CH₂Cl₂.

Correct Answer
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11ea7d6e_065f_12e3_8568_a34d445fb275_TB1830_00_TB1830_00

Draw condensed structures for the four compounds with formula C₃H₉N.

Correct Answer
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CH₃CH₂CH₂NH₂
C...
View Answer