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[DOC File]Chapter 1
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• We use valence-bond theory. • A covalent bond forms when the orbitals on two atoms overlap. • The shared region of space between the orbitals is called the orbital overlap. • There are two electrons (usually one from each atom) of opposite spin in the orbital overlap. • As two nuclei approach each other their atomic orbitals overlap.
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Molecular Orbital Theory
understand molecular theory. sigma & pi bonds. Skills: calculate bond order using MO theory. Notes: molecular orbital theory: a theory that describes chemical bonds as a combination of the orbitals of the atoms that are bonded. sigma (σ) bond: a hybrid orbital made by combining two s-orbitals. The first bond between two atoms is a σ bond.
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[DOC File]Molecular Orbital Worksheet
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Bond order = ½ (8-4)= 2. Not all the electrons are paired, the molecule is paramagnetic. 2. Draw the four π-molecular orbitals for the molecule butadiene, drawn below. Label . the four orbitals as bonding, non-bonding or antibonding. Which of the four orbitals . are occupied? Which …
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[DOC File]CHAPTER 10 - MOLECULAR SHAPE AND THEORY OF BONDING
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The molecular orbital diagram A is consistent with the experimental evidence that B2 is paramagnetic and C2 is diamagnetic. Molecular orbital diagram B would yield a diamagnetic B2 and a paramagnetic C2 molecules. The molecular orbital model shows that O2 has a bond order = 2, that is a double bond - sigma and pi bonds.
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[DOC File]CHAPTER 10
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6. Use molecular orbital theory to explain the bonding and magnetic character of molecular nitrogen, N2. 7. C2 is diamagnetic with a bond order of 2, but O2 is paramagnetic with a bond order of(2. Using molecular orbital theory, account for these facts. 8.
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[DOC File]1 - kau
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43. In molecular orbital theory, the bond order of O2 is greater than that of O2+. A) True B) False 44. Molecular orbital theory predicts that F2 is more stable than F2+. A) True B) False 45. Delocalized molecular orbitals extend over three or more atoms. A) True B) False 46.
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[DOC File]MOLECULAR ORBITAL THEORY AND UV SPECTROSCOPY
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Bond order > 0 produces a stable molecule. Bond order = 0 means no bonds formed between atoms. Bond order < 0 means that the molecule is unstable (decomposes). Molecular Orbital Description of Alkenes: Ethylene (C2H4) The C-C sigma (() bond in ethylene results from the overlap of two 2sp2 atomic orbitals producing two MO’s (one (1 bonding and ...
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[DOC File]Review - Scribnotes
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If there are two molecular orbitals of the same energy, the electrons will fill each orbital before pairing will begin. Bond order: tells us if a bond will exist (even a molecular sometimes) 0.5* (bonding electrons – antibonding electrons). If the bond order is 0 a bond will not form. Paramagnetic: Unpaired electrons in molecular orbitals.
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[DOC File]Molecular Orbital Theory of Octahedral Complexes
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In contrast to crystal field theory, molecular orbital included the covalent nature of the metal-ligand bond interaction. No Metal- Ligand -bonding ( bonding only) Let’s take [Co(NH3)6]3+ as an example. Using the LGO method, one can construct a qualitative MO diagram for bonding in a [ML6]n+ complex.
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CHEM 1411 EXAM # 3 Name:_____________________
determine the electron-domain geometry, molecular geometry, hybridization, and show the angle . between the bonds in a drawing. S is the central atom, all other . atoms are attached to C. Given C2 2-, using molecular orbital and valence bond theory; Write molecular orbital configuration. Determine BOND ORDER and indicate stability
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Molecular orbital theory bond order