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EBK CHEMISTRY
9th Edition
ISBN: 8220100453809
Author: ZUMDAHL
Publisher: Cengage Learning US
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Textbook Question
Chapter 9, Problem 2ALQ
Explain the difference between the σ and π MOs for homonuclear diatomic molecules. How are bonding and antibonding orbitals different? Why are there two π MOs and one σ MO? Why are the π MOs degenerate?
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Consider the following second-period heteronuclear diatomic molecule.
Combining the valence orbitals (2px, 2py, 2pz, and 2s) of each of the two atoms
creates eight new orbitals (one 02s*, one 02s, one 02p, one 02p, two л₂p, and
two л₂p) that span the entire molecule and explain it's electronic properties.
Those eight new orbitals exist at six energy levels.
Rank the molecular orbitals of a F2 molecule from lowest (1) to highest (6)
energy.
Fatom
6- highest
1- lowest
F2 molecule
[Choose ]
[Choose ]
[Choose ]
[Choose ]
[Choose ]
[Choose ]
F atom
Construct the molecular orbital diagram showing the bonding and antibonding molecular orbitals from combinations of two s orbitals using H2 as an example [Write the generic wave functions of the molecular orbitals]
Describe how Molecular Orbital diagrams are constructed using the Linear Combination of Atomic
Orbitals (LCAO-MO).
Use Hz as an example.
Chapter 9 Solutions
EBK CHEMISTRY
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- What are the relationships among bond order, bond energy, and bond length? Which of these quantities can be measured?arrow_forwardWhy is the concept of hybridization required in valence bond theory?arrow_forwardIn the molecular orbital mode l, compare and contrast bonds with bonds. What orbitals form the bonds and what orbitals form the bonds? Assume the z-axis is the internuclear axis.arrow_forward
- The molecules N2 and CO are isoelectronic but their properties are quite different. Although as a first approximation we often use the same MO diagram for both, suggest how the MOs in N2 and CO might be different.arrow_forwardWhich of the period 2 homonuclear diatomic molecules are predicted to be paramagnetic?arrow_forwardIdentify the hybrid orbitals used by antimony in SbCl5 and in SbCl6, the ion formed from the reaction of SbCl5 and Cl. Explain your choices.arrow_forward
- Electrons in bonding molecular orbitals are most likely to be found in the region between the two bonded atoms. Why does this arrangement favor bonding? In a antibonding orbital, where are the electrons most likely to be found in relation to the nuclei in a bond?arrow_forwardConsider a heteronuclear diatomic molecule, AB, where A and B are period 2 elements. Using the following pieces of information, provide details on the molecular orbital diagram of AB: Clue 1: The MO diagram of AB does not contain non- bonding electrons. Clue 2: The s and p orbital energies of both atoms are quite close to one another that interactions between different orbital types occur. Clue 3: AB" is more stable than AB, but AB2 is less stable than AB". Clue 4: The potential energies of the atomic orbitals of A are higher than the potential energies of the atomic orbitals of B. Table 1. Atomic orbital energies of period 2 elements. Atom Orbital energy Orbital energy (2s) (2p) Li -5.45 Ве -9.30 B -14.0 -8.30 C -19.5 -10.7 -25.5 -13.1 -32.3 -15.9 F -46.4 -18.7 Ne -48.5 -21.5arrow_forward
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Linear Combination of Atomic Orbitals LCAO; Author: Edmerls;https://www.youtube.com/watch?v=nq1zwrAIr4c;License: Standard YouTube License, CC-BY
Quantum Molecular Orbital Theory (PChem Lecture: LCAO and gerade ungerade orbitals); Author: Prof Melko;https://www.youtube.com/watch?v=l59CGEstSGU;License: Standard YouTube License, CC-BY