Interpretation:
The similarities and the differences between VB theory and MO theory are to be stated.
Concept introduction:
When two atomic orbitals come close to each other they lose their identity and form new pair of orbitals knows as molecular orbitals. Among the two molecular orbitals formed, one has energy lower than the atomic orbitals is known as bonding molecular orbital and the other has energy higher than the atomic orbitals and is known as antibonding molecular orbital. The electrons in molecular orbitals are filled according to Aufbau’s principle and Hund’s rule.
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Physical Chemistry
- Use molecular orbital arguments to decide whether or not the difluoride dianion, F22, should exist as a stable ion.arrow_forwardUsing a group theoretical approach, generate the MO diagrams for silane, SiH4. Be sure that your diagram is fully-labeled with MO assignments, is properly scaled in energy space, and provide a sketch of the MO. Determine the bond order for the silane molecule, and for the Si-H bond.arrow_forward6. Draw the basis set for in-plane for in-plane ë- bonding in square planar ML4 molecule.arrow_forward
- 2. Draw to scale the energy level diagram for C₂. Draw the Lewis structure: What is the total number of valence electrons? What is the point group for this molecule? Draw the molecular orbital diagram for only the 2s and 2p valence orbitals. Label all of the atomic orbitals and molecular orbitals. Fill the orbitals with electrons. Label the HOMO and LUMO. Draw the shapes of the HOMO and LUMO molecular orbitals. What is the bond order?arrow_forwardSketch the MO diagram for 1,3 butadienearrow_forwardPredict the valence electron configuration and the totalbond order for the molecule I2. Will I2 be paramagnetic or diamagnetic?arrow_forward
- Use group theory to derive the MO diagram for the pi system in 1,3-butadiene. Sketch the shapes of these MOsarrow_forwardProduce an MO diagram for N2 and determine the overlap integral for the HOMO and LUMO orbitals using an N2 bond distance of 1.09 Å.arrow_forwardConstruct the energy level diagrams of molecular orbitals for the π-system of ethylene. Use the model that the molecule is formed from the appropriately hybridized CH2 fragments. Specifically, use the Hückel MO energies which should be expressed in terms of the Coulomb and resonance integrals, and the respective 2x2 secular determinant.arrow_forward
- Diatomic molecules. The order of stability of molecular orbitals a) It is always the same for all b) It is almost the same as that of the starting atomic orbitals c) It follows from the appropriate correlation diagrams d) It is known exactly quantitatively.arrow_forwardSketch the MO diagram for 1,3 budadiene. Identify the HOMO and LUMO along with all symmetric MO’s, asymmetric MO’s, bonding MO’s, and anti bonding MO’s.arrow_forwardDraw an MO diagram to explain the existence of the trihydrogen cation (H3+). Hint: it forms a cyclic structure. Use individual 1s orbitals from H atoms to form your molecular orbitals (don’t worry about forming LGOs; determine the symmetries of the MOs using the projection operator method and sketch approximate wavefunctions for each). How many electrons are present in this molecule? What is the bond order? What type of bonding is this?arrow_forward
- Physical ChemistryChemistryISBN:9781133958437Author:Ball, David W. (david Warren), BAER, TomasPublisher:Wadsworth Cengage Learning,