Domanda del libro di testo
Determine the electron geometry, molecular geometry, and idealized bond angles for each molecule. In which cases do you expect deviations from the idealized bond angle?
a. CS2
b. SCl2
c. CHF3
d. PF3
Ch.11 - Chemical Bonding II: Molecular Shapes, VSEPR & MO Theory
Tro6th EditionChemistry: A Molecular ApproachISBN: 9780137832217
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TOC.tableOfContents
- Ch.1 - Matter, Measurement & Problem Solving118
- Ch.2 - Atoms & Elements106
- Ch.3 - Molecules and Compounds131
- Ch.4 - Chemical Reactions and Chemical Quantities56
- Ch.5 - Introduction to Solutions and Aqueous Solutions82
- Ch.6 - Gases114
- Ch.7 - Thermochemistry96
- Ch.8 - The Quantum-Mechanical Model of the Atom60
- Ch.9 - Periodic Properties of the Elements90
- Ch.10 - Chemical Bonding I: The Lewis Model89
- Ch.11 - Chemical Bonding II: Molecular Shapes, VSEPR & MO Theory85
- Ch.12 - Liquids, Solids & Intermolecular Forces51
- Ch.13 - Solids & Modern Materials47
- Ch.14 - Solutions90
- Ch.15 - Chemical Kinetics115
- Ch.16 - Chemical Equilibrium68
- Ch.17 - Acids and Bases136
- Ch.18 - Aqueous Ionic Equilibrium153
- Ch.19 - Free Energy & Thermodynamics93
- Ch.20 - Electrochemistry106
- Ch.21 - Radioactivity & Nuclear Chemistry74
- Ch.22 - Organic Chemistry140
Tro6th EditionChemistry: A Molecular ApproachISBN: 9780137832217Non è quello che usi tu?Cambia libro di testo
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Tro 6th EditionCh.11 - Chemical Bonding II: Molecular Shapes, VSEPR & MO TheoryProblema 34c
Tro 6th EditionCh.11 - Chemical Bonding II: Molecular Shapes, VSEPR & MO TheoryProblema 34cCapitolo 11, Problema 34c
For each molecular geometry, list the number of total electron groups, the number of bonding groups, and the number of lone pairs on the central atom. (c)
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Identify the central atom in the molecular geometry. In this case, it is the atom at the center of the structure.
Count the total number of electron groups around the central atom. Electron groups include bonding pairs (single, double, or triple bonds) and lone pairs of electrons.
Determine the number of bonding groups around the central atom. Bonding groups are the number of atoms directly bonded to the central atom.
Determine the number of lone pairs on the central atom. Lone pairs are pairs of valence electrons that are not involved in bonding.
Summarize the findings: list the total number of electron groups, the number of bonding groups, and the number of lone pairs on the central atom.
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Molecular Geometry
Molecular geometry refers to the three-dimensional arrangement of atoms within a molecule. It is determined by the number of electron groups around the central atom, which includes both bonding pairs and lone pairs. Understanding molecular geometry is crucial for predicting the shape and reactivity of molecules, as it influences properties such as polarity and intermolecular interactions.
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01:33
Molecular Geometry with Two Electron Groups
Electron Groups
Electron groups are regions of electron density around a central atom, which can be bonding pairs (shared between atoms) or lone pairs (non-bonding electrons). The total number of electron groups determines the molecular geometry according to the VSEPR (Valence Shell Electron Pair Repulsion) theory, which states that electron groups will arrange themselves to minimize repulsion between them.
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00:51Electron Groups Example
VSEPR Theory
VSEPR (Valence Shell Electron Pair Repulsion) theory is a model used to predict the geometry of individual molecules based on the repulsion between electron pairs in the valence shell of the central atom. By considering the number of bonding and lone pairs, VSEPR theory helps to determine the molecular shape, which is essential for understanding chemical behavior and interactions.
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Percorso guidato
02:13Molecular Shapes and VSEPR
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Determine the electron geometry, molecular geometry, and idealized bond angles for each molecule. In which cases do you expect deviations from the idealized bond angle?
a. CI4
b. NCl3
c. OF2
d. H2S