Question 1

Delocalization of charge over two or more atoms _______ a molecule.
A) destabilizes
B) delocalizes
C) localizes
D) stabilizes
E) None of these

Accepted Answer

Delocalization of charge over two or more atoms stabilizes a molecule by spreading out the charge, which reduces the energy and increases stability.

Question 2

The spreading of positive or negative charge over two or more atoms in a compound is called_______.
A) isomerism
B) delocalization
C) stereoisomerism
D) localization
E) None of these

Accepted Answer

Delocalization is the spreading of charge over two or more atoms in a compound, which can result in increased stability and unique properties. Isomerism refers to different arrangements of atoms in a molecule, stereoisomerism refer to compounds with the same structural formula but different spatial arrangements. Localization is the opposite of delocalization and describes the concentration of charge on a specific atom or group of atoms within a molecule.

Question 3

What is a resonance hybrid?

Accepted Answer

The answer of What is a resonance hybrid?...

Question 4

Which of the following pairs are resonance structures of each other?  
A) I
B) II
C) III
D) IV
E) None of these

Accepted Answer

The answer of Which of the following pairs are resonance...

Question 5

Provide the curved arrow(s) to draw a resonance structure for the following compound.

Accepted Answer

The answer of Provide the curved arrow(s) to draw a...

Question 6

Which of the following violates the rules for curved arrows? 
A) I
B) II
C) III
D) IV
E) none of these

Accepted Answer

The answer of Which of the following violates the rules...

Question 7

Which of the following pairs are resonance structures of each other?  
A) I
B) II
C) III
D) IV
E) None of these

Accepted Answer

The answer of Which of the following pairs are resonance...

Question 8

Which of the following violates the rules for curved arrows? 
A) I and II
B) III and IV
C) I, and III
D) II, III and IV
E) all of these

Accepted Answer

The answer of Which of the following violates the rules...

Question 9

Label the bonds that are out of the plane and behind the plane of the paper.

Accepted Answer

The answer of Label the bonds that are out of...

Question 10

The indicated bond in the following compound is_____ of the paper. 
A) in the plane
B) out of the plane
C) behind the plane
D) None of these

Accepted Answer

The answer of The indicated bond in the following compound...

Question 11

Draw all lone pairs of electrons for the following compound.

Accepted Answer

The answer of Draw all lone pairs of electrons for...

Question 12

Resonance structures have _______ connectivity of atoms and _______ distribution of electrons.
A) different, same
B) same, same
C) different, different
D) same, different
E) None of these

Accepted Answer

Resonance structures depict the same arrangement of atoms (connectivity) but differ in the distribution of electrons among those atoms.

Question 13

Which of the following violates the rules for curved arrows? 
A) I
B) II and IV
C) I and III
D) III and IV
E) None of these

Accepted Answer

The answer of Which of the following violates the rules...

Question 14

Provide the curved arrow(s) to draw a resonance structure for the following compound.

Accepted Answer

The answer of Provide the curved arrow(s) to draw a...

Question 15

Which of the following is a Fischer projection? 
A) I
B) II
C) III
D) IV
E) Both III and IV

Accepted Answer

The answer of Which of the following is a Fischer...

Question 16

The indicated bond in the following compound is_____ of the paper. 
A) in the plane
B) out of the plane
C) behind the plane
D) None of these

Accepted Answer

The answer of The indicated bond in the following compound...

Question 17

Explain using words as well as structural drawings, if the single curved arrow shown is sufficient to draw the resonance structure.

Accepted Answer

The answer of Explain using words as well as structural...

Question 18

The indicated bond in the following compound is_____ of the paper. 
A) in the plane
B) out of the plane
C) behind the plane
D) None of these

Accepted Answer

The compound shown in the image is a tetrahedral molecule with four atoms/groups attached to the central carbon atom. The bond indicated with a solid wedge is coming out of the plane of the paper towards the viewer. Therefore, the correct choice is B, which indicates that the bond is out of the plane.

Question 19

Provide the curved arrow(s) to draw a resonance structure for the following compound.

Accepted Answer

The answer of Provide the curved arrow(s) to draw a...

Question 20

Which of the following is a Haworth projection? 
A) I
B) II
C) III
D) IV
E) Both III and IV

Accepted Answer

The answer of Which of the following is a Haworth...

Quiz 2: Molecular Representations

Delocalization of charge over two or more atoms _______ a molecule.

The spreading of positive or negative charge over two or more atoms in a compound is called_______.

What is a resonance hybrid?

Which of the following pairs are resonance structures of each other?

Provide the curved arrow(s) to draw a resonance structure for the following compound.

Which of the following violates the rules for curved arrows?

Which of the following pairs are resonance structures of each other?

Which of the following violates the rules for curved arrows?

Label the bonds that are out of the plane and behind the plane of the paper.

The indicated bond in the following compound is_____ of the paper.

Draw all lone pairs of electrons for the following compound.

Resonance structures have _ connectivity of atoms and _ distribution of electrons.

Which of the following violates the rules for curved arrows?

Provide the curved arrow(s) to draw a resonance structure for the following compound.

Which of the following is a Fischer projection?

The indicated bond in the following compound is_____ of the paper.

Explain using words as well as structural drawings, if the single curved arrow shown is sufficient to draw the resonance structure.

The indicated bond in the following compound is_____ of the paper.

Provide the curved arrow(s) to draw a resonance structure for the following compound.

Which of the following is a Haworth projection?