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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lattice 2.0
Transcribed Image Text:### Understanding Lattice Energy
**Instructions:**
In each row, pick the compound with the bigger lattice energy.
**Note:** Lattice energy is always greater than zero.
**Comparison Table:**
| Which compound has the bigger lattice energy? |
|-----------------------|
| **BaS** | BaCl₂ |
| ○ | ○ |
| **MgI₂** | NaI |
| ○ | ○ |
| **BeS** | BeO |
| ○ | ○ |
- In the first row, the selected compound is **BaS**.
- In the second row, no compound is currently selected.
- In the third row, no compound is currently selected.
**Guide:**
1. **Lattice Energy:** It is a measure of the strength of the bonds in an ionic compound. Higher lattice energy corresponds to a stronger bond, indicating greater stability of the compound.
2. **Factors Affecting Lattice Energy:**
- **Charge of Ions:** Higher charges generally lead to higher lattice energies.
- **Size of Ions:** Smaller ions usually result in greater lattice energies since the ions can get closer together, increasing the electrostatic attraction.
**Explanation of Table:**
- **BaS vs. BaCl₂:**
- Factor to consider: The charge and the size of the ions.
- Answer: Compound with a higher lattice energy is **BaS**.
- **MgI₂ vs. NaI:**
- Factor to consider: The charge of Mg²⁺ vs. Na⁺.
- Still needs to be selected based on the higher charge of Mg²⁺ compared to Na⁺.
- **BeS vs. BeO:**
- Factor to consider: The charge and the size of the ions.
- Still needs to be selected based on comparisons of lons' size and charge.
---
Make sure to analyze the ionic charges and sizes properly when selecting the compound with higher lattice energy.
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