Chem 266 CEL Assignment 1 30 Total Marks 1. Add lone pairs to the nitrogen and oxygen atoms to complete their octets and then determine the formal charge on each nitrogen and oxygen atom. (4 Marks) 2. Consider the structures given in question 1: (4 marks) a) For compound B, what is the hybridization of the nitrogen atoms? b) Which compound has the greatest number of sigma bonds? c) Which compound has the greatest number of pi bonds? 2 d) Which compound has a sp hybridized carbon atom? 3. Draw all significant resonance structures for each of the following compounds. Draw arrows to show the flow of electrons, marks will be given for this. (12 marks, ½ mark off for each mistake) 4. Place the following molecules in order of decreasing basicity. (Strongest to weakest base) (2 Marks. You must have them all in the correct order or zero) 5. Draw the resonance structures of the conjugate bases for the following acids and order the acids from strongest to weakest. Draw arrows to show the flow of electrons, marks will be given for this. (8 marks, 1 mark for correct order and ½ mark of for each mistake) 1
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