Chemistry for Today: General, Organic, and Biochemistry
9th Edition
ISBN:9781305960060
Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Chapter4: Forces Between Particles
Section: Chapter Questions
Problem 4.1E: Refer to the group numbers of the periodic table and draw Lewis structures for atoms of the...
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![### Examining the Resonance Structures of ClO4⁻ (Perchlorate Ion)
**Consider the following structures for ClO4⁻. Which one contributes most to the overall structure?**
**Structure A:**
- Central Chlorine (Cl) is single bonded to four Oxygen (O) atoms.
- Each Oxygen atom has three lone pairs of electrons.
- Chlorine has no lone pairs.
- Overall negative charge is indicated outside the brackets.
**Structure B:**
- Central Chlorine (Cl) is double bonded to one Oxygen (O) atom and single bonded to the other three Oxygen atoms.
- The double-bonded Oxygen has two lone pairs.
- Each single-bonded Oxygen has three lone pairs.
- Chlorine has one lone pair.
- Overall negative charge is indicated outside the brackets.
**Structure C:**
- Central Chlorine (Cl) is triple bonded to one Oxygen (O) atom and the other three with double bonds.
- The triple-bonded Oxygen has one lone pair.
- Each double-bonded Oxygen has two lone pairs.
- Chlorine has two lone pairs.
- Overall negative charge is indicated outside the brackets.
**Multiple Choice Options:**
- ○ B
- ○ A
- ○ C
- ○ They are all equal
- ○ None of these structures are correct
### Explanation of Graphs/Diagrams:
**Lewis Structure Diagrams:**
- Each diagram represents possible resonance structures for the ClO4⁻ ion.
- Atoms are represented with their symbols (Cl and O).
- Bonds between atoms are represented by lines (single, double, or triple lines).
- Unshared electron pairs (lone pairs) on atoms are represented by dots around the elemental symbol.
- Negative charge is indicated by a [ \]- symbol.
**Instruction:**
- Each student should carefully evaluate the formal charges on atoms in each structure.
- Consider which structure minimizes formal charges and obeys the octet rule as much as possible.
### Answer Key Discussion:
The better resonance structure typically distributes negative charge more evenly and minimizes formal charges on atoms in the molecule. Evaluate the structures and choose the one that most accurately represents the true electronic structure of ClO4⁻.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Faf6c3174-f071-4892-a981-9c51afb6153d%2Fd889810c-9a7c-43cb-acf7-54e4780099dc%2Fj1i3ulf_processed.png&w=3840&q=75)
Transcribed Image Text:### Examining the Resonance Structures of ClO4⁻ (Perchlorate Ion)
**Consider the following structures for ClO4⁻. Which one contributes most to the overall structure?**
**Structure A:**
- Central Chlorine (Cl) is single bonded to four Oxygen (O) atoms.
- Each Oxygen atom has three lone pairs of electrons.
- Chlorine has no lone pairs.
- Overall negative charge is indicated outside the brackets.
**Structure B:**
- Central Chlorine (Cl) is double bonded to one Oxygen (O) atom and single bonded to the other three Oxygen atoms.
- The double-bonded Oxygen has two lone pairs.
- Each single-bonded Oxygen has three lone pairs.
- Chlorine has one lone pair.
- Overall negative charge is indicated outside the brackets.
**Structure C:**
- Central Chlorine (Cl) is triple bonded to one Oxygen (O) atom and the other three with double bonds.
- The triple-bonded Oxygen has one lone pair.
- Each double-bonded Oxygen has two lone pairs.
- Chlorine has two lone pairs.
- Overall negative charge is indicated outside the brackets.
**Multiple Choice Options:**
- ○ B
- ○ A
- ○ C
- ○ They are all equal
- ○ None of these structures are correct
### Explanation of Graphs/Diagrams:
**Lewis Structure Diagrams:**
- Each diagram represents possible resonance structures for the ClO4⁻ ion.
- Atoms are represented with their symbols (Cl and O).
- Bonds between atoms are represented by lines (single, double, or triple lines).
- Unshared electron pairs (lone pairs) on atoms are represented by dots around the elemental symbol.
- Negative charge is indicated by a [ \]- symbol.
**Instruction:**
- Each student should carefully evaluate the formal charges on atoms in each structure.
- Consider which structure minimizes formal charges and obeys the octet rule as much as possible.
### Answer Key Discussion:
The better resonance structure typically distributes negative charge more evenly and minimizes formal charges on atoms in the molecule. Evaluate the structures and choose the one that most accurately represents the true electronic structure of ClO4⁻.
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