Domanda del libro di testo
(b) If you react BF3 to make the ion BF32-, is this ion planar?
Ch.9 - Molecular Geometry and Bonding Theories
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement177
- Ch.2 - Atoms, Molecules, and Ions231
- Ch.3 - Chemical Reactions and Reaction Stoichiometry216
- Ch.4 - Reactions in Aqueous Solution189
- Ch.5 - Thermochemistry175
- Ch.6 - Electronic Structure of Atoms168
- Ch.7 - Periodic Properties of the Elements150
- Ch.8 - Basic Concepts of Chemical Bonding177
- Ch.9 - Molecular Geometry and Bonding Theories200
- Ch.10 - Gases179
- Ch.11 - Liquids and Intermolecular Forces113
- Ch.12 - Solids and Modern Materials154
- Ch.13 - Properties of Solutions157
- Ch.14 - Chemical Kinetics199
- Ch.15 - Chemical Equilibrium128
- Ch.16 - Acid-Base Equilibria164
- Ch.17 - Additional Aspects of Aqueous Equilibria163
- Ch.18 - Chemistry of the Environment105
- Ch.19 - Chemical Thermodynamics164
- Ch.20 - Electrochemistry171
- Ch.21 - Nuclear Chemistry122
- Ch.22 - Chemistry of the Nonmetals82
- Ch.23 - Transition Metals and Coordination Chemistry79
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry16
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Non è quello che usi tu?Cambia libro di testo
Capitolo 9, Problema 41
Predict whether each of the following molecules is polar or nonpolar: (a) IF, (b) CS2, (c) SO3, (d) PCl3, (e) SF6, (f) IF5.
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Determine the molecular geometry for each molecule using VSEPR theory.
Assess the electronegativity difference between the atoms in each molecule to identify polar bonds.
For each molecule, evaluate the symmetry of the molecular geometry to determine if the dipoles cancel out.
If the dipoles do not cancel out, the molecule is polar; if they do, the molecule is nonpolar.
Summarize the polarity of each molecule based on the analysis of bond polarity and molecular geometry.
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Molecular Polarity
Molecular polarity refers to the distribution of electrical charge across a molecule, which determines whether it has a positive or negative end. A molecule is polar if it has a significant difference in electronegativity between its atoms, leading to an uneven distribution of charge. Nonpolar molecules, on the other hand, have an even distribution of charge, often due to symmetrical arrangements of identical atoms or balanced dipoles.
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Percorso guidato
02:38
Molecular Polarity
Electronegativity
Electronegativity is a measure of an atom's ability to attract and hold onto electrons in a chemical bond. The difference in electronegativity between two bonded atoms can indicate whether the bond is ionic, polar covalent, or nonpolar covalent. In general, larger differences in electronegativity (greater than 1.7) result in ionic bonds, while smaller differences (less than 1.7) can lead to polar or nonpolar covalent bonds.
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02:10Electronegativity Trends
Molecular Geometry
Molecular geometry refers to the three-dimensional arrangement of atoms within a molecule. The shape of a molecule affects its polarity; for example, a symmetrical shape can lead to nonpolar characteristics even if the individual bonds are polar. Understanding the geometry, often predicted by VSEPR theory, is crucial for determining the overall polarity of a molecule, as it influences how dipoles from polar bonds interact.
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01:33Molecular Geometry with Two Electron Groups
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