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HW1_09_ans - CHEM 131 Inorganic Chemistry I(Assignment 1...

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1 CHEM 131: Inorganic Chemistry I (Assignment 1, due date: Oct 22, 2009) 1. BrCl 3 BrF 4 - Br Cl Cl Cl Br Cl Cl Cl T shape Br F F F F Br F F F F Square planar (non-polar) - - P(CH 3 ) 2 Cl 3 P C Cl Cl Cl P Cl Cl Cl CH 3 CH 3 Trigonal Bipyramidal H H H C H H H XeO 2 XeO 2 F 2 Xe O O Xe O O V-shape Xe O F F Xe F F O T shape 2. Solution : They are radial probability functions and correspond to 3s, 3p and 3d, respectively. 3. Solution: S N O F O N S F F N O S a) + b) Base on the formal charge, structure (3) is most unstable. Base on the chemical knowledge, structure (2) is most likely dominant Lewis structure in the resonance since N=O bond is stronger than N=S bond c) (1) (2) (3) +1 0 0 -1 0 +1 0 -1 +1 -1 -1 +1 4. Solution: P: sp 3 O: approximately sp Sb: sp 3 d 2
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2 5. Solution: Fe: 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 6 [Ar]4s 2 3d 6 Fe 2+ : 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 6 [Ar]3d 6 Ir: 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 10 5p 6 6s 2 4f 14 5d 7 [Xe]6s 2 4f 14 5d 7 Ir 3+ : 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 10 5p 6 4f 14 5d 6 [Xe]4f 14 5d 6 6.
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