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According to MO theory, which molecule or ion has the highest bond energy? O2, O2- , O22-
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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
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831Non è quello che usi tu?Cambia libro di testo
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Tro 4th EditionCh.10 - Chemical Bonding II: Molecular Shapes & Valence Bond TheoryProblema 82
Tro 4th EditionCh.10 - Chemical Bonding II: Molecular Shapes & Valence Bond TheoryProblema 82Capitolo 10, Problema 82
Draw an energy diagram for HCl. Predict the bond order and make a sketch of the lowest energy bonding molecular orbital.
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Identify the atomic orbitals involved in the formation of HCl. Hydrogen has a 1s orbital, and chlorine has 3p orbitals that can participate in bonding.
Determine the type of bond formed between hydrogen and chlorine. HCl forms a sigma (σ) bond through the overlap of the hydrogen 1s orbital and one of the chlorine 3p orbitals.
Predict the bond order using the formula: Bond Order = (Number of bonding electrons - Number of antibonding electrons) / 2. For HCl, there are no antibonding electrons in the simplest model, so the bond order is 1.
Sketch the energy diagram: Place the hydrogen 1s orbital and the chlorine 3p orbital on the left and right, respectively. Show the formation of a bonding molecular orbital (σ) at a lower energy level than the original atomic orbitals.
Draw the lowest energy bonding molecular orbital: Represent the σ bond as an oval shape encompassing both nuclei, indicating the region of electron density where the 1s and 3p orbitals overlap.
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Energy Diagram
An energy diagram visually represents the energy levels of molecular orbitals in a molecule. It shows the relative energies of bonding, antibonding, and non-bonding orbitals, helping to understand the stability of the molecule. For HCl, the diagram will illustrate the interaction between the hydrogen and chlorine atomic orbitals, leading to the formation of molecular orbitals.
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01:57
Energy Diagrams
Bond Order
Bond order is a measure of the number of chemical bonds between a pair of atoms, calculated as the difference between the number of bonding and antibonding electrons divided by two. In the case of HCl, the bond order indicates the strength and stability of the H-Cl bond. A higher bond order generally correlates with a stronger bond.
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00:36Average Bond Order
Molecular Orbital Theory
Molecular Orbital Theory describes the behavior of electrons in molecules by combining atomic orbitals to form molecular orbitals. These orbitals can be bonding, antibonding, or non-bonding. For HCl, the lowest energy bonding molecular orbital is formed from the overlap of the hydrogen 1s orbital and the chlorine 3p orbital, which stabilizes the molecule and contributes to its bond formation.
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03:06Molecular Orbital Theory
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