Domanda del libro di testo
Determine the electron configurations for CN+, CN, and CN-. (a) Which species has the strongest C¬N bond?
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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 79d
Using Figures 9.35 and 9.43 as guides, draw the molecular orbital electron configuration for (d) Ne22 +. In each case indicate whether the addition of an electron to the ion would increase or decrease the bond order of the species.
Guida verificata passo dopo passo1
Identify the total number of electrons in the neutral Ne2 molecule. Neon (Ne) has 10 electrons, so Ne2 has 20 electrons.
Since Ne2^2+ is given, remove 2 electrons from the total electron count of Ne2, resulting in 18 electrons for Ne2^2+.
Draw the molecular orbital (MO) diagram for Ne2^2+. Start by filling the molecular orbitals with the 18 electrons, following the order: \(\sigma_{1s}, \sigma_{1s}^*, \sigma_{2s}, \sigma_{2s}^*, \sigma_{2p_z}, \pi_{2p_x} = \pi_{2p_y}, \pi_{2p_x}^* = \pi_{2p_y}^*, \sigma_{2p_z}^*\).
Calculate the bond order using the formula: \(\text{Bond Order} = \frac{(\text{Number of bonding electrons} - \text{Number of antibonding electrons})}{2}\).
Consider the effect of adding an electron to Ne2^2+. Determine if the electron would enter a bonding or antibonding orbital and how this would affect the bond order.
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Molecular Orbital Theory
Molecular Orbital Theory describes how atomic orbitals combine to form molecular orbitals, which can be occupied by electrons. In this theory, electrons are delocalized over the entire molecule rather than being associated with individual atoms. Understanding this concept is crucial for determining the electron configuration of molecules and ions, as well as predicting their stability and bond order.
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03:06
Molecular Orbital Theory
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. A higher bond order indicates a stronger bond and greater stability of the molecule. In the context of the question, determining how the addition of an electron affects bond order is essential for understanding the stability of the Ne22 + ion.
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00:36Average Bond Order
Electron Configuration
Electron configuration refers to the distribution of electrons in an atom or ion's molecular orbitals. It is represented by a series of numbers and letters that indicate the energy levels and types of orbitals occupied by electrons. For Ne22 +, accurately drawing the electron configuration is necessary to analyze how the addition of an electron influences the overall molecular stability and bond characteristics.
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01:33Electron Configuration Example
Pratica correlata
Domanda del libro di testo
Explain the following: (c) The O22 + ion has a stronger O—O bond than O2 itself.
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Domanda del libro di testo
How would we describe a substance that contains only paired
electrons and is weakly repelled by a magnetic field? Which
of the following ions would you expect to possess similar
characteristics: H2-, Ne2+, F2, O22 +?
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Domanda del libro di testo
If we assume that the energy-level diagrams for homonuclear diatomic molecules shown in Figure 9.43 can be applied to heteronuclear diatomic molecules and ions, predict the bond order and magnetic behavior of (d) ClF.
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Domanda del libro di testo
If we assume that the energy-level diagrams for homonuclear diatomic molecules shown in Figure 9.43 can be applied to heteronuclear diatomic molecules and ions, predict the bond order and magnetic behavior of (b) NO+.
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