Table of contents

1. A Review of General Chemistry5h 5m
2. Molecular Representations1h 14m
3. Acids and Bases2h 46m
4. Alkanes and Cycloalkanes4h 17m
5. Chirality3h 39m
6. Thermodynamics and Kinetics1h 22m
7. Substitution Reactions1h 48m
8. Elimination Reactions2h 30m
9. Alkenes and Alkynes2h 9m
10. Addition Reactions3h 19m
11. Radical Reactions1h 58m
12. Alcohols, Ethers, Epoxides and Thiols2h 42m
13. Alcohols and Carbonyl Compounds2h 17m
14. Synthetic Techniques1h 26m
15. Analytical Techniques:IR, NMR, Mass Spect7h 3m
16. Conjugated Systems6h 13m
17. Ultraviolet Spectroscopy51m
18. Aromaticity2h 34m
19. Reactions of Aromatics: EAS and Beyond5h 1m
20. Phenols55m
21. Aldehydes and Ketones: Nucleophilic Addition4h 56m
22. Carboxylic Acid Derivatives: NAS2h 51m
23. The Chemistry of Thioesters, Phophate Ester and Phosphate Anhydrides1h 10m
24. Enolate Chemistry: Reactions at the Alpha-Carbon1h 53m
25. Condensation Chemistry2h 9m
26. Amines1h 43m
27. Heterocycles2h 0m
28. Carbohydrates5h 53m
29. Amino Acids4h 20m
30. Peptides and Proteins2h 42m
31. Catalysis in Organic Reactions1h 30m
32. Lipids 2h 50m
33. The Organic Chemistry of Metabolic Pathways2h 52m
34. Nucleic Acids1h 32m
35. Transition Metals6h 14m
36. Synthetic Polymers1h 49m

1. A Review of General Chemistry

Lewis Structure

Organic Chemistry

1. A Review of General Chemistry

Lewis Structure

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1:20 minutes

Problem 55g

Textbook Question

How many valence electrons does each of the following contribute to a Lewis structure?
(g) S

Verified step by step guidance

Step 1: Recall the concept of valence electrons. Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding. The number of valence electrons for an element can be determined from its position in the periodic table.

Step 2: Locate sulfur (S) on the periodic table. Sulfur is in Group 16 (also known as Group VI-A), which means it has six valence electrons.

Step 3: Write the electron configuration for sulfur to confirm the number of valence electrons. Sulfur has an atomic number of 16, so its electron configuration is:

{1s}^{2} {2s}^{2} {2p}^{6} {3s}^{2} {3p}^{4} . The electrons in the 3s and 3p orbitals (a total of 6) are the valence electrons.

Step 4: Understand that these six valence electrons are the ones sulfur contributes to a Lewis structure. In a Lewis structure, these electrons are represented as dots around the sulfur atom.

Step 5: Conclude that sulfur contributes six valence electrons to a Lewis structure, which is consistent with its group number and electron configuration.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Valence Electrons

Valence electrons are the outermost electrons of an atom and are crucial for determining how an atom will bond with others. In the context of Lewis structures, these electrons are represented as dots around the chemical symbol of the element. The number of valence electrons varies by element and is determined by its position in the periodic table.

Lewis Structures

Lewis structures are diagrams that represent the bonding between atoms in a molecule and the lone pairs of electrons that may exist. They use dots to represent valence electrons and lines to represent bonds between atoms. Understanding how to draw and interpret Lewis structures is essential for visualizing molecular geometry and predicting reactivity.

Sulfur's Valence Electrons

Sulfur (S) is located in group 16 of the periodic table and has six valence electrons. This is important for constructing its Lewis structure, as these electrons will participate in bonding with other atoms. Recognizing the number of valence electrons helps in predicting how sulfur will interact with other elements in chemical reactions.

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Related Practice

Textbook Question

For each of the given species:

a. Draw its Lewis structure.

b. Describe the orbitals used by each carbon atom in bonding and indicate the approximate bond angles.

2. HCN

Textbook Question

Given the atoms involved and the number of valence electrons remaining, complete the Lewis structure by placing bonds between atoms such that each has a full octet.

(a)

Textbook Question

How many valence electrons does each of the following contribute to a Lewis structure?

(j) Al

Textbook Question

How many valence electrons does each of the following contribute to a Lewis structure?

Textbook Question

How many valence electrons does each of the following contribute to a Lewis structure?

(i) Cl

Textbook Question

How many valence electrons does each of the following contribute to a Lewis structure?

(l) ―1 charge

Textbook Question

Show how the Lewis dot structure for each of the following atoms would overlap to form a single bond.

(b) C and O

Textbook Question

Which atom in each pair would you expect to be the central atom in a Lewis structure?

(b) C vs. O

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How many valence electrons does each of the following contribute to a Lewis structure? (g) S

Key Concepts

Valence Electrons

Lewis Structures

Sulfur's Valence Electrons

Watch next

How many valence electrons does each of the following contribute to a Lewis structure?
(g) S