Domanda del libro di testo
Sketch the bonding molecular orbital that results from the linear combination of two 1s orbitals. Indicate the region where interference occurs and state the kind of interference (constructive or destructive).
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Ch.10 - Chemical Bonding II: Molecular Shapes & Valence Bond Theory
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831
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TOC.tableOfContents
- Ch.1 - Matter, Measurement & Problem Solving136
- Ch.2 - Atoms & Elements112
- Ch.3 - Molecules, Compounds & Chemical Equations159
- Ch.4 - Chemical Quantities & Aqueous Reactions140
- Ch.5 - Gases118
- Ch.6 - Thermochemistry106
- Ch.7 - Quantum-Mechanical Model of the Atom62
- Ch.8 - Periodic Properties of the Elements103
- Ch.9 - Chemical Bonding I: The Lewis Model104
- Ch.10 - Chemical Bonding II: Molecular Shapes & Valence Bond Theory89
- Ch.11 - Liquids, Solids & Intermolecular Forces73
- Ch.12 - Solids and Modern Material59
- Ch.13 - Solutions110
- Ch.14 - Chemical Kinetics140
- Ch.15 - Chemical Equilibrium78
- Ch.16 - Acids and Bases155
- Ch.17 - Aqueous Ionic Equilibrium176
- Ch.18 - Free Energy and Thermodynamics108
- Ch.19 - Electrochemistry118
- Ch.20 - Radioactivity and Nuclear Chemistry82
- Ch.21 - Organic Chemistry150
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Tro 4th EditionCh.10 - Chemical Bonding II: Molecular Shapes & Valence Bond TheoryProblema 67
Tro 4th EditionCh.10 - Chemical Bonding II: Molecular Shapes & Valence Bond TheoryProblema 67Capitolo 10, Problema 67
Consider the structure of the amino acid alanine. Indicate the hybridization about each interior atom.
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Identify the hybridization of each interior atom by counting the number of regions of electron density (bonds and lone pairs) around each atom.
For atom 1 (oxygen), there are 3 regions of electron density (2 lone pairs and 1 double bond), so the hybridization is sp2.
For atom 2 (carbon), there are 3 regions of electron density (1 double bond and 2 single bonds), so the hybridization is sp2.
For atom 3 (oxygen), there are 4 regions of electron density (2 lone pairs and 2 single bonds), so the hybridization is sp3.
For atom 4 (carbon), there are 4 regions of electron density (4 single bonds), so the hybridization is sp3.
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Hybridization
Hybridization is the concept of mixing atomic orbitals to form new hybrid orbitals that can accommodate the bonding requirements of atoms in a molecule. In the case of alanine, understanding the hybridization of each interior atom helps predict the geometry and bond angles around those atoms, which is crucial for understanding the molecule's structure and reactivity.
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00:51
Hybridization
Amino Acids Structure
Amino acids are organic compounds that serve as the building blocks of proteins. Each amino acid has a central carbon atom (the alpha carbon) bonded to an amino group, a carboxyl group, a hydrogen atom, and a variable R group (side chain). The specific structure of alanine, with its methyl side chain, influences its properties and interactions in biological systems.
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02:15Acids and Their Structure
Bond Angles and Molecular Geometry
Bond angles and molecular geometry are determined by the arrangement of electron pairs around a central atom, influenced by hybridization. For alanine, the hybridization of the carbon atoms leads to specific bond angles (e.g., approximately 109.5° for tetrahedral geometry) that dictate the overall shape of the molecule, affecting its function and interactions in biological contexts.
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01:53Bond Angles
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