Homework 5 key

Homework 5 key - CH101/Ison Name: _, _ last, first Homework...

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CH101/Ison Name: _____________, _____________ last, first Homework 5 1. Draw Lewis structures for the following molecules/ions. Include all bonding and lone pairs as well as all non-zero formal charges. NBr 3 N Br Br Br .. : .. .. .. .. : .. : : SeH 2 Se H H .. .. NH 2 Cl N H Cl H .. .. : .. COH 2 (C is in the center) O H H : : SO 3 (expanded octet) S O O .. : : .. : : AlBr 3 Al Br Br Br .. : .. .. .. .. : : : H 3 O 1+ Lone pairs on O atoms not shown in the drawing. They should be included otherwise N O O O 1+ 1- 1- 1- NH 4 1+ N H H H H 1+ SO 4 2- (expanded octet) S O O O O .. .. .. .. : : : : : : 2- SCl 2 .. .. .. .. : : S Cl Cl .. ..
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CH101/Ison Name: _____________, _____________ last, first 2. Draw all resonance forms for oxalate, shown below. C C O O O O 2- C C O O O O 2- C C O O O O 2- C C O O O O 2- 3. What is the bond order of the C-O bond in oxalate shown above? Shared pairs/bonding areas = 3/2 = 1.5 There is no resonance between the C-C bonds therefore they are not included in the calculation for bond order. The pairs of electrons are shared between the two sets of C-O bonding interactions only. 4. Draw Lewis structure for the molecules below and determine which one will have the shortest N-N bond. a) N 2 H 4 b) N 2 c) N 2 F 2 N N : : N N H H H H : : N N F F .. .. (lone pairs on F are not shown) N 2 has the strongest and shortest bond since it’s a triple bond.
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Homework 5 key - CH101/Ison Name: _, _ last, first Homework...

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