Draw the molecular dipole or demonstrate the symmetrical cancellation of vectors in the following molecule, and describe it as polar or nonpolar. NCl3
Draw the molecular dipole or demonstrate the symmetrical cancellation of vectors in the following molecule, and describe it as polar or nonpolar. NCl3
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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Draw the molecular dipole or demonstrate the symmetrical cancellation of vectors in the following molecule, and describe it as polar or nonpolar.
NCl3

Transcribed Image Text:**Understanding Molecular Polarity**
Here is a detailed explanation of several molecular structures and their associated polarity:
1. **A. Structure (Polar)**
- Diagram: A molecule with a central nitrogen atom connected to two chlorine atoms and another chloride ion. There is a pair of non-bonding electrons on the nitrogen. The dipole moment arrows point away from the nitrogen towards the chlorines, forming an overall net dipole moment in one particular direction, indicated by a red arrow.
2. **B. Structure (Polar)**
- Diagram: A central nitrogen atom bonded symmetrically to two carbon atoms, which are further bonded to chlorine atoms. Blue dipole arrows show an unequal distribution of charge, suggesting a net dipole moment in one direction, highlighted by the red arrow.
3. **C. Structure (Polar)**
- Diagram: Nitrogen is in the center, bonded to one carbon and one chloride, and the carbon is bonded to another chloride. This creates an asymmetrical shape with a lone pair on the nitrogen, generating a significant net dipole moment indicated by the blue arrows and the red arrow.
4. **D. Structure (Nonpolar)**
- Diagram: A trigonal planar arrangement with nitrogen central and bonded to three chlorine atoms. There are no lone pairs, and the dipole moments cancel each other, resulting in no net polarity.
5. **E. Structure (Polar)**
- Diagram: This structure features nitrogen bonded in a way that appears symmetrical but with lone pairs disrupting symmetry. Blue arrows represent dipole moments; the overall molecule has a net dipole as indicated by the red arrow.
6. **F. Structure (Nonpolar)**
- Diagram: Three symmetric bonds around a nitrogen with lone pairs. Although there are dipole moments, they cancel out due to symmetry, rendering the molecule nonpolar.
7. **G. Structure (Nonpolar)**
- Diagram: Nitrogen is centrally located with three chlorine atoms positioned symmetrically around it. The symmetry ensures dipole cancellations, and no net direction is formed.
8. **H. Structure (Nonpolar)**
- Diagram: A structure resembling a tetrahedral arrangement with nitrogen in the center, surrounded by chlorines equally spaced. Full symmetry leads to the cancellation of dipole moments, resulting in a nonpolar molecule.
**Explanation of Polarity:**
Polarity in molecules arises due to unequal sharing of electrons between atoms with
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