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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Step 4

Transcribed Image Text:### Creating the Lewis Structure of C₂H₂O
The following guide walks through the steps to create the Lewis structure for C₂H₂O.
#### Available Electrons
- **Available Electrons:** 16
#### Instructions
1. **Count Valence Electrons**:
- First, determine the total number of valence electrons in the molecule. Add the periodic group numbers for each atom in the structure, adjusting for charge if necessary. Enter and check your answer.
2. **Form Bonds**:
- Connect each pair of bonded atoms with a single bond by dragging bonds onto the molecule. Each bond decreases the number of available electrons by 2. Check your answer.
3. **Complete Octets**:
- Drag lone pairs of electrons to each terminal atom until each has an octet of electrons, or until all electrons are used. You may remove a lone pair by clicking on it. Check your answer.
4. **Place Remaining Electrons**:
- Place any remaining electrons on the central atom. If the structure is already correct, or no electrons remain, check your answer.
5. **Double Bonds**:
- Examine the structure. If the central atom has fewer than eight valence electrons, create multiple bonds by changing a terminal lone pair into a bonding pair. Complete the octet as necessary.
#### Notes
- Work only on the currently bolded step below – don’t work ahead to solve the final structure.
- Scroll down to see steps 3–5.
#### Diagram Explanation
- A diagram with the initial unconnected atoms is shown (C, H, C, O, H).
- There are blocks representing bonds and available electrons:
- Single bonds are represented by short lines.
- Lone pairs are represented by pairs of dots.
By following these steps, students will be able to construct the correct Lewis structure for acrolein (C₂H₂O), ensuring each atom fulfills its valence electron requirement.
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