105a_Parr_Exam 3 Sum08 key

105a_Parr_Exam 3 Sum08 key - 1 Chemistry 105 A PLEASE PRINT...

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Unformatted text preview: 1 Chemistry 105 A PLEASE PRINT YOUR NAME IN BLOCK LETTERS Exam 3 Name: __________________________________ 06/16/08 Last 4 Digits of USC ID:____ ____ ____ ____ Dr. Jessica Parr Lab TAs Name: _________________________________ Question Points Score Grader 1 19 2 4 3 10 4 10 5 12 6 15 7 15 8 10 9 5 Total 100 Please Sign Below: I certify that I have observed all the rules of Academic Integrity while taking this examination. Signature: _______________________________________________________________ Instructions: 1. You must show work to receive credit. 2. If necessary, please continue your solutions on the back of the preceding page (facing you). 3. YOU MUST use black or blue ink. (No pencil, no whiteout, no erasable ink.) 4. There are 9 problems on 9 pages. Please count them before you begin. A periodic table and some useful equations can be found on the last page. 5. Good luck!! =) First Letter of last Name 2 1. (19 pt) a. Give the electron configuration for the following: Al: _____________________________________________________________ Sn: _____________________________________________________________ b. What is the maximum number of electrons in an atom that can have these quantum numbers? (i) n =4 ________ (ii) n = 5, l = 3 ________ (iii) n = 7, l = 1, m l = -1 ________ (iv) n = 2, l = 3, m l = 1 ________ (v) n = 1, l = 0, m l = 0, m s = - ________ c. None of the following ground-state electron configurations are correct. In each case select the best explanation why. (i) 1s 1 2s 1 ________ (ii) 1s 2 2p 2 ________ (iii) 1s 2 2s 2 2p 7 ________ (iv) 1s 2 2s 2 2p 6 2d 10 3s 2 3p 6 ________ (A) The 1p level is missing between levels 1s and 2s....
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105a_Parr_Exam 3 Sum08 key - 1 Chemistry 105 A PLEASE PRINT...

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