postclass37 - 1 Problem set#10(Chs 23 24 due next week...

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1. Problem set #10 (Chs. 23, 24) due next week - Friday 4/25 at 7:00 am. 2. Current reading: Chs. 23, 24 – Transition Metal Chemistry 3. Final exam: Saturday, May 3 rd ; 9:00 – 11:00 am 4. Course evaluations: ubcats.cas.buffalo.edu
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Bonding and properties in metals What if more than 2 interacting atoms? Figure 12.1 Figure 12.2 Why are metals conductive? band Metal 4 8
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Metal Insulator Bonding and properties in metals and insulators bandgap Figure 12.2
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Transition metals!
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Unique properties of transition metals Element or group Oxidation state Oxygen -2 Halogens (Grp 17) -1 in binary compounds Hydrogen +1 when bonded to nonmetals -1 when bonded to metals Nonmetals Element or group Oxidation state Alkali metals (Group 1) +1 Alkaline earth metals (Group 2) +2 Aluminum +3 Main group metals Figure 23.20 1. Oxidation state Why do TMs have so many available oxidation states?
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Unique properties of transition metals 2. Color 1. Oxidation state K 3 [Fe(CN) 6 ] [Ni(H 2 O) 6 ]Cl 2 [Cu(H 2 O) 6 ]SO 4 Fe 4 [Fe(CN) 6 ] 3 +3 +2
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Unique properties of transition metals 2. Color 1. Oxidation state 3. Magnetic properties [Mn(H 2 O) 6 ] 2+ = paramagnetic ( Five unpaired electrons) [Fe(H 2 O) 6 ] 2+ = paramagnetic ( Four
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