Question 1

How many nonbonding electron pairs,bonding electron pairs,pi bonds,and sigma bonds are present in CO2?

Accepted Answer

4 nonbonding electro...

Question 2

What orbitals overlap to create the H-C bond in CH3+?

Accepted Answer

A)  sp3-sp3
B)  sp2-sp3
C)  s-p
D)  s-sp2
E)  s-sp3F) A) and B)
G) A) and E)

Question 3

Draw the Lewis structure for CH3N2+.

Accepted Answer

Question 4

Each lone pair of electrons on the O atom in methanol (CH3OH) occupies a(n) ________ orbital.

Accepted Answer

A)  s
B)  p
C)  sp
D)  sp2
E)  sp3F) A) and E)
G) A) and D)

Question 5

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

Question 6

A molecule of acetonitrile CH3CN contains ________ sigma bonds and ________ pi bonds.

Accepted Answer

A)  5,2
B)  4,3
C)  4,2
D)  2,2
E)  4,0F) None of the above
G) A) and D)

Question 7

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

Question 8

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*,π,or π*)results...

Question 9

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) B) and C)
G) B) and D)

Question 10

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*,π,or π*)results...

Question 11

Identify the compound with the weakest bond.

Accepted Answer

A)  H2
B)  HF
C)  HCl
D)  HBr
E)  HIF) B) and C)
G) C) and E)

Question 12

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 13

How many distinct and degenerate p orbitals exist in the second electron shell,where n = 2?

Accepted Answer

A)  0
B)  1
C)  2
D)  3
E)  4F) A) and D)
G) A) and B)

Question 14

Which of the following covalent bonds has the largest dipole moment?

Accepted Answer

A)  C-C
B)  C-H
C)  C-O
D)  H-N
E)  H-FF) B) and E)
G) C) and D)

Question 15

Which carbon(s) in the following molecule is (are) sp hybridized?

Accepted Answer

A)  carbon 1
B)  carbon 2
C)  carbons 1,3
D)  carbons 4
E)  carbons 4,5F) A) and C)
G) A) and E)

Question 16

Which of the following elements does this electronic configuration represent? 1s2 2s2 2p5

Accepted Answer

A)  F
B)  C
C)  N
D)  Al
E)  OF) B) and E)
G) B) and C)

Question 17

Give the electronic configuration for Ca+2.

Accepted Answer

Question 18

Give the hybridizations of the carbons,from left to right,in CH3CH  CHCl.

Accepted Answer

Question 19

Propanal is a compound detected on the surface of comet 67P by the Philae Lander.How many atoms sp2 hybridized atoms are in this molecule? 2 hybridized atoms are in this molecule?   A) 0 B) 1 C) 2 D) 3 E) 4" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  0
B)  1
C)  2
D)  3
E)  4F) C) and D)
G) A) and E)

Question 20

The formal charge on nitrogen in the compound below is

Accepted Answer

A)  +2
B)  +1
C)  0
D)  -1
E)  -2F) A) and E)
G) B) and E)

Exam 1: Remembering General Chemistry: Electronic Structure and Bonding

Which of the following elements does this electronic configuration represent? 1s2 2s2 2p5

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Which carbon(s) in the following molecule is (are) sp hybridized?

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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?

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How many distinct and degenerate p orbitals exist in the second electron shell,where n = 2?

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How many nonbonding electron pairs,bonding electron pairs,pi bonds,and sigma bonds are present in CO2?

Correct Answerverified4 nonbonding electro...View AnswerShow Answer

The formal charge on nitrogen in the compound below is

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Propanal is a compound detected on the surface of comet 67P by the Philae Lander.How many atoms sp2 hybridized atoms are in this molecule?

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Draw the Lewis structure for CH3N2+.

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What orbitals overlap to create the H-C bond in CH3+?

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

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Which of the following covalent bonds has the largest dipole moment?

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Give the hybridizations of the carbons,from left to right,in CH3CH CHCl.

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

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Give the electronic configuration for Ca+2.

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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?

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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?

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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.

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Each lone pair of electrons on the O atom in methanol (CH3OH) occupies a(n) ________ orbital.

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Identify the compound with the weakest bond.

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A molecule of acetonitrile CH3CN contains ________ sigma bonds and ________ pi bonds.

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Which of the following elements does this electronic configuration represent? 1s² 2s² 2p⁵

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How many nonbonding electron pairs,bonding electron pairs,pi bonds,and sigma bonds are present in CO₂?

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4 nonbonding electro...
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Propanal is a compound detected on the surface of comet 67P by the Philae Lander.How many atoms sp²hybridized atoms are in this molecule?

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Draw the Lewis structure for CH₃N₂⁺.

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What orbitals overlap to create the H-C bond in CH₃⁺?

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Give the hybridizations of the carbons,from left to right,in CH₃CH CHCl.

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

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Give the electronic configuration for Ca⁺².

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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?

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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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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.

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Each lone pair of electrons on the O atom in methanol (CH₃OH) occupies a(n) ________ orbital.

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A molecule of acetonitrile CH₃CN contains sigma bonds and pi bonds.

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