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For molecules containing atoms with electrons in p orbitals, energy-level diagrams become more complex. Core electrons are usually omitted from MO energy level diagrams. Discuss with your group or the class the following: (a) Why are core electrons usually omitted? For the second-row diatomics what is the lowest MO formed from valence shell orbitals? (b) Describe how molecular orbitals are formed from atomic orbitals. Would you expect them to be higher or lower in energy than o (sigma) molecular orbitals? (c) As the nuclear charge increases, the energies of all orbitals are lowered, as shown in the figure below for homonuclear diatomics. Why does this happen?

For molecules containing atoms with electrons in p orbitals, energy-level diagrams become more complex. Core electrons are usually omitted from MO energy level diagrams. Discuss with your group or the class the following: (a) Why are core electrons usually omitted? For the second-row diatomics what is the lowest MO formed from valence shell orbitals? (b) Describe how molecular orbitals are formed from atomic orbitals. Would you expect them to be higher or lower in energy than o (sigma) molecular orbitals? (c) As the nuclear charge increases, the energies of all orbitals are lowered, as shown in the figure below for homonuclear diatomics. Why does this happen?

Chemistry: Principles and Practice
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter10: Molecular Structure And Bonding Theories
Section: Chapter Questions
Problem 10.101QE: The molecular orbital diagram of NO shown in Figure 10.47 also applies to OF. Draw the complete...
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Second-row diatomics For molecules containing atoms with electrons in p orbitals, energy-level diagrams become more complex. Core electrons are usually omitted from MO energy level diagrams. Discuss with your group or the class the following: (a) (b) Why are core electrons usually omitted? For the second-row diatomics what is the lowest MO formed from valence shell orbitals? Describe how molecular orbitals are formed from atomic orbitals. Would you expect them to be higher or lower in energy than a (sigma) molecular orbitals? (c) As the nuclear charge increases, the energies of all orbitals are lowered, as shown in the figure below for homonuclear diatomics. Why does this happen? 620x Li₂ Bez 1 0₂ F₂ Ne₂ p #p 29 620 625 #20 Note: For molecules smaller than 02, the 2p orbital is higher in energy than the #2p orbitals. An explanation of this can be found on your Moodle course page for those of you who are interested...
Transcribed Image Text:Second-row diatomics For molecules containing atoms with electrons in p orbitals, energy-level diagrams become more complex. Core electrons are usually omitted from MO energy level diagrams. Discuss with your group or the class the following: (a) (b) Why are core electrons usually omitted? For the second-row diatomics what is the lowest MO formed from valence shell orbitals? Describe how molecular orbitals are formed from atomic orbitals. Would you expect them to be higher or lower in energy than a (sigma) molecular orbitals? (c) As the nuclear charge increases, the energies of all orbitals are lowered, as shown in the figure below for homonuclear diatomics. Why does this happen? 620x Li₂ Bez 1 0₂ F₂ Ne₂ p #p 29 620 625 #20 Note: For molecules smaller than 02, the 2p orbital is higher in energy than the #2p orbitals. An explanation of this can be found on your Moodle course page for those of you who are interested...
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