Supplemental Instruction Tiffany SiaCHEM 115a [email protected] Reisler www.usc.edu/siWeek After Exam 4 (11/26-11/30)Exam 4 is this Thursday! Make sure you really understand the concepts behind theVSEPR and molecular orbital theories of bonding. Know what each describes the best,and the differences between the two. This test is very conceptual, so get those basicsdown and read the book for further explanations! 1. Molecular Orbital Theory:a. If four atomic orbitals on one atom overlap with four orbitals on a second atom,how many molecular orbitals will form? b. The overlap of atomic orbitals creates two types of molecular orbitals. What are they? How are they different?c. Define bond order. What does a higher bond order mean? Lower? A bond order of 0?d. Why do we only consider valence electrons in the Molecular Orbital Theory? Draw a picture explaining why.e. Draw molecular orbital diagrams for O2+, F2, and B2-. Indicate whether or not each molecular would be attracted toa magnet. Which molecule is the most stable? Which molecule would have the shortest bond length?Which molecule would have the highest bond energy?Topics on this sheet:1. Molecular Orbital Theory2. HybridizationSupplemental Instruction Tiffany SiaCHEM 115a [email protected] Reisler www.usc.edu/sif. Draw the following orbitals: s2ss*2ps*2sp2ps2p p*2p2. Hybridization: a. Hybridization involves mixing s, p & d orbitals on each atom to minimize the energy necessary for bonding. b. Atoms with two electron domains use ________ hybridizationAtoms with three electron domains use ________ hybridizationAtoms with four electron domains use ________ hybridizationAtoms with five electron domains use ________ hybridizationAtoms with six electron domains use ________ hybridizationc. Draw two sp2 hybridized carbon atoms forming bonds. Be sure to indicate how many bonds are formed and includethe names of the orbitals that are involved in the bonding.Supplemental Instruction Tiffany SiaCHEM 115a [email protected] Reisler www.usc.edu/sid. This is testosterone: i. How many sp3 carbons are there?ii. How many sp2 carbons are there?iii. How many sp carbons are there?iv. What is the hybridization for the double bonded
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