Question 1

Draw the other important resonance form of:

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Question 2

Which of the following choices represent(s) a pair of resonance forms?

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Question 3

In the compound sodium methoxide (NaOCH3), there is ________ bonding.

Accepted Answer

Sodium methoxide consists of an ionic bond between sodium (Na) and the methoxide ion (OCH3-), and within the methoxide ion, there are covalent bonds between oxygen and carbon, and carbon and hydrogen.

Question 4

Structures ________, shown below, are resonance structures, and structure ________ is the major contributor to the overall resonance hybrid.

Accepted Answer

Structures 1, 3, and 5 are the resonance structures because they differ only in the location of the double bond and the position of the lone pair on the nitrogen. Structure 3 is the major contributor because it has the least separation of charge, as the negative charge is localized on the oxygen and the positive charge is localized on the nitrogen.

Question 5

Draw the important resonance forms for the structure shown below.

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Question 6

The Lewis structure of trimethylamine is shown below. Draw the condensed structural formula which corresponds to this Lewis structure.

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Question 7

Draw the important resonance forms for the structure shown below.

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Question 8

When a molecule can best be represented as a series of resonance forms, each of these forms always contributes to the same degree in the hybrid.

Accepted Answer

The contribution of each resonance form to the hybrid depends on its stability; more stable resonance forms contribute more to the hybrid structure than less stable ones.

Question 9

Draw 3 significant resonance structures for the compound shown below. Place a box around the major contributor. Fill in any missing formal charges.

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Question 10

Draw the important resonance forms of:

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Question 11

The Lewis structure of pentane is shown below. Draw the condensed structural formula which corresponds to this Lewis structure.

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Question 12

Draw a line-angle formula for (CH₃)₂CHCH₂CH₂NH₂.

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Question 13

Draw the important resonance forms for the structure shown below.

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Question 14

Draw the complete Lewis structure for the compound whose condensed formula is (CH₃)₂CHCHO.

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Question 15

When a negatively charged species is most appropriately depicted as a hybrid of several resonance forms, the negative charge present is considered to be rapidly moving between the resonance forms bearing the formal negative charge.

Accepted Answer

The negative charge is not actually moving between the resonance forms; rather, resonance forms are a way to depict the delocalization of the charge across the molecule, indicating that the actual electronic structure is a hybrid of all the resonance forms.

Question 16

Which of the following bonding patterns of carbon is not allowed in the formation of an organic compound?

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Question 17

Nitroamines are common functional groups found in energetic materials, such as RDX and HMX. For the structure below, draw two other significant resonance structures, include any formal charges, and indicate the hybridization on each nitrogen and oxygen.

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Question 18

Which of the following structures (a-d) is another resonance structure of the following organic molecule?

Accepted Answer

Resonance structures are different forms of a molecule or ion that can be drawn by redistributing electrons. The given organic molecule has a double bond between the two carbon atoms, and since the carbon atoms are sp2 hybridized, they can form a pi bond. The given molecule already has one pi bond, which means there's another possible location where a pi bond could exist. By moving the pi bond between the two carbon atoms to the neighboring carbon-carbon bond, we can draw the resonance structure shown in choice B. This structure has a delocalized pi electron system, which is more stable than the localized pi electron system of the given molecule. Therefore, B is the best choice for a resonance structure.

Question 19

One resonance structure of a cation is shown. Provide the other reasonable resonance structures.

Accepted Answer

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Question 20

Which of the following compounds are covalent compounds?

Accepted Answer

Covalent compounds are typically composed of nonmetals, and both B and C contain only nonmetals (carbon, fluorine, sulfur, nitrogen, and hydrogen). KCl (potassium chloride) is an ionic compound composed of a metal (potassium) and a nonmetal (chlorine), so it is not covalent.

Quiz 1: Introduction and Review

Draw the other important resonance form of:

Which of the following choices represent(s) a pair of resonance forms?

In the compound sodium methoxide (NaOCH3) , there is ________ bonding.

Structures , shown below, are resonance structures, and structure is the major contributor to the overall resonance hybrid.

Draw the important resonance forms for the structure shown below.

The Lewis structure of trimethylamine is shown below. Draw the condensed structural formula which corresponds to this Lewis structure.

Draw the important resonance forms for the structure shown below.

When a molecule can best be represented as a series of resonance forms, each of these forms always contributes to the same degree in the hybrid.

Draw 3 significant resonance structures for the compound shown below. Place a box around the major contributor. Fill in any missing formal charges.

Draw the important resonance forms of:

The Lewis structure of pentane is shown below. Draw the condensed structural formula which corresponds to this Lewis structure.

Draw a line-angle formula for (CH₃)₂CHCH₂CH₂NH₂.

Draw the important resonance forms for the structure shown below.

Draw the complete Lewis structure for the compound whose condensed formula is (CH₃)₂CHCHO.

When a negatively charged species is most appropriately depicted as a hybrid of several resonance forms, the negative charge present is considered to be rapidly moving between the resonance forms bearing the formal negative charge.

Which of the following bonding patterns of carbon is not allowed in the formation of an organic compound?

Nitroamines are common functional groups found in energetic materials, such as RDX and HMX. For the structure below, draw two other significant resonance structures, include any formal charges, and indicate the hybridization on each nitrogen and oxygen.

Which of the following structures (a-d) is another resonance structure of the following organic molecule?

One resonance structure of a cation is shown. Provide the other reasonable resonance structures.

Which of the following compounds are covalent compounds?

Quiz 1: Introduction and Review

Draw the other important resonance form of:

Which of the following choices represent(s) a pair of resonance forms?

In the compound sodium methoxide (NaOCH3) , there is ________ bonding.

Structures ________, shown below, are resonance structures, and structure ________ is the major contributor to the overall resonance hybrid.

Draw the important resonance forms for the structure shown below.

The Lewis structure of trimethylamine is shown below. Draw the condensed structural formula which corresponds to this Lewis structure.

Draw the important resonance forms for the structure shown below.

When a molecule can best be represented as a series of resonance forms, each of these forms always contributes to the same degree in the hybrid.

Draw 3 significant resonance structures for the compound shown below. Place a box around the major contributor. Fill in any missing formal charges.

Draw the important resonance forms of:

The Lewis structure of pentane is shown below. Draw the condensed structural formula which corresponds to this Lewis structure.

Draw a line-angle formula for (CH3)2CHCH2CH2NH2.

Draw the important resonance forms for the structure shown below.

Draw the complete Lewis structure for the compound whose condensed formula is (CH3)2CHCHO.

When a negatively charged species is most appropriately depicted as a hybrid of several resonance forms, the negative charge present is considered to be rapidly moving between the resonance forms bearing the formal negative charge.

Which of the following bonding patterns of carbon is not allowed in the formation of an organic compound?

Nitroamines are common functional groups found in energetic materials, such as RDX and HMX. For the structure below, draw two other significant resonance structures, include any formal charges, and indicate the hybridization on each nitrogen and oxygen.

Which of the following structures (a-d) is another resonance structure of the following organic molecule?

One resonance structure of a cation is shown. Provide the other reasonable resonance structures.

Which of the following compounds are covalent compounds?

Structures , shown below, are resonance structures, and structure is the major contributor to the overall resonance hybrid.

Draw a line-angle formula for (CH₃)₂CHCH₂CH₂NH₂.

Draw the complete Lewis structure for the compound whose condensed formula is (CH₃)₂CHCHO.