Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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
Transcribed Image Text:**Understanding Lewis Structures: A Guide to Drawing the Lewis Structure of C₂H₃Cl**
On this page, you will learn how to draw the most reasonable Lewis structure for the compound C₂H₃Cl. Lewis structures are diagrams that represent the bonds between atoms of a molecule and the lone pairs of electrons that may exist. These structures help in understanding the distribution of electrons in a molecule and are essential for studying molecular geometry, bonding, and reactivity.
**Steps to Draw the Lewis Structure:**
1. **Count the Total Valence Electrons:**
- Carbon (C) has 4 valence electrons. For two carbon atoms: 2 x 4 = 8.
- Hydrogen (H) has 1 valence electron. For three hydrogen atoms: 3 x 1 = 3.
- Chlorine (Cl) has 7 valence electrons. For one chlorine atom: 7.
- Total valence electrons = 8 + 3 + 7 = 18.
2. **Arrange the Atoms:**
- Place carbon atoms in the center because they can form multiple bonds.
- Connect the two carbon atoms with a single bond.
- Attach the hydrogen atoms to the carbons.
- Attach the chlorine atom to one of the carbon atoms.
3. **Distribute the Electrons:**
- Use the remaining electrons to satisfy the octet rule (8 electrons) for each atom, prioritizing the central atoms (carbon) and chlorine.
4. **Checking and Completing the Structure:**
- Ensure all atoms have the appropriate number of full valence shells.
- Carbon typically forms four bonds, hydrogen one, and chlorine can form one bond with three lone pairs.
**Tips for Drawing Lewis Structures:**
- Always start by connecting single bonds and then distribute remaining electrons.
- Make sure hydrogen atoms are always at the terminal position.
- Check that each atom, except hydrogen, satisfies the octet rule.
By following these steps, you can accurately depict the electron arrangement in C₂H₃Cl, aiding in your understanding of its molecular structure and chemical properties.
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