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 the Molecular Geometry of PHCl₂
The molecular geometry of a molecule significantly influences its physical and chemical properties. The geometry is determined by the arrangement of electron pairs around the central atom according to the VSEPR (Valence Shell Electron Pair Repulsion) theory.
#### Question:
The molecular geometry of the PHCl₂ molecule is ________.
#### Options:
- ○ tetrahedral
- ○ trigonal planar
- ○ bent
- ○ trigonal pyramidal
- ○ T-shaped
Select the appropriate option that describes the molecular geometry of the PHCl₂ molecule based on electron pair repulsion and molecular structure principles.
#### Explanation:
When learning about molecular geometry:
1. **Tetrahedral** – This geometry arises when there are four bonding pairs and no lone pairs around the central atom.
2. **Trigonal Planar** – This occurs with three bonding pairs and no lone pairs around the central atom.
3. **Bent** – This shape is observed when there are two bonding pairs and one or two lone pairs around the central atom.
4. **Trigonal Pyramidal** – This geometry occurs with three bonding pairs and one lone pair around the central atom.
5. **T-Shaped** – This shape is formed when there are three bonding pairs and two lone pairs around the central atom.
Consider the Lewis structure, electron domain, and molecular geometry to choose the correct answer for the PHCl₂ molecule.
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