chem final review 2 - unpaired electrons there are for the...

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Opalka • Prelim II Review Session • Cornell University • Fall 2006 Part 1: Predict the Lewis structures, indicate whether the bonds are σ or π bonds, propose a hybridization scheme for each one. A. NH 2 COOH B. C 2 N 2 C. CNCF 3 D. C(NH 2 ) 3 + Part 2: Using Information about Lewis Structures to Analyze Compounds : A. Longest C-O bond length H 2 CO, HCO 2 - , and CH 3 OH B. Draw the dipole moment for each compound, disregarding bonds to H H 2 NBH 2 ,NH 2 NH 2 , NH 2 OH
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Opalka • Prelim II Review Session • Cornell University • Fall 2006 Part 3: Molecular Orbital Theory Construct a MO diagram for CN, and rank the following in terms of bond strength and bond length: CN + , CN, and CN - . Indicate whether the compound is paramagnetic or diamagnetic.
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Opalka • Prelim II Review Session • Cornell University • Fall 2006 Part 4: Transition Metal Chemistry A. Provide the metal oxidation state, d-electron count and state how many
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Unformatted text preview: unpaired electrons there are for the following complexes. i. [CrCl(H 2 O) 5 ] 2+ ii. [CoCl(NO 2 )(NH 3 ) 4 ] + (low spin) iii. [Cr(en) 3 ] 3+ B. Provide the d-orbital splitting diagram for the following metal complexes. Label each d-orbital and state whether the complex is paramagnetic or diamagnetic. a. [MoCl 6 ] 3-b. [Co(en) 3 ] 3+ Opalka Prelim II Review Session Cornell University Fall 2006 c. [FeCl 4 ]-C. If [Cr(H 2 O) 6 ] 2+ absorbs light with a wavelength of 700nm what color is the solution? D. Order the following complexes in order of increasing ligand strength without consulting the spectrochemical series. The colors have been made up for the purpose of this problem. a. [Fe(H 2 O) 6 ] 3+ appears blue b. [Fe(ox) 3 ] 3-appears green c. [Fe(SCN) 6 ] 3-appears purple...
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This note was uploaded on 03/31/2008 for the course CHEM 2070 taught by Professor Chirik,p during the Fall '05 term at Cornell University (Engineering School).

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chem final review 2 - unpaired electrons there are for the...

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