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:**Title: Molecular Orbital Theory and Magnetism**
**Overview:**
This exercise will guide you through completing the Molecular Orbital (MO) diagram for the molecule \( \text{OF}^- \) in order to determine whether it exhibits paramagnetism or diamagnetism.
**Task Description:**
- **Objective:** Complete the MO diagram for \( \text{OF}^- \).
- **Goal:** Determine if \( \text{OF}^- \) is paramagnetic or diamagnetic.
**Diagram Details:**
The MO diagram is divided into the following sections:
- **Sigma (σ) and Pi (π) Orbitals:**
- Two π (pi) orbitals are filled sequentially, depicted with arrows to denote electron spin.
- One low-lying σ (sigma) orbital is shown, also with arrow indications for electron placement.
- An antibonding sigma (\( \sigma^*\)) and antibonding pi (\( \pi^*\)) orbitals are positioned above these filled orbitals.
**Instructions:**
1. **Fill the Molecular Orbitals:**
- Assign electrons to the orbitals starting from the lowest energy level.
- Follow Hund’s rule and the Pauli exclusion principle for electron configuration.
2. **Determine Magnetic Property:**
- **Paramagnetic:** If unpaired electrons are present.
- **Diamagnetic:** If all electrons are paired.
**Choices:**
- A) Paramagnetic
- B) Diamagnetic
Select the correct magnetic property based on your completed MO diagram of \( \text{OF}^- \).
**Conclusion:**
Understanding the electron arrangement in molecular orbitals helps predict the magnetic properties of a molecule. This exercise deepens comprehension of how molecular orbital theory influences molecular behavior.
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