177Exam3KeyS07

177Exam3KeyS07 - SEAT NO DR JOE BURNETT SPRING 2007 THIS...

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SEAT NO.__________ DR. JOE BURNETT SPRING 2007 THIS EXAM CONSISTS OF 25 QUESTIONS ON 10 PAGES CHEM 177 EXAM III April 4, 2007 NAME___ Answer Key _ __ RECIT. INSTR.______________ RECIT. SECT._______________ GRADING Teaching Assistants and Recitation Sections PAGE POINTS SCORE Name Sections Time 2 3 4 5 6 7 8 TOTAL 23 pts 16 pts 14 pts 14 pts 12 pts 16 pts 6 pts 101 pts ________ ________ ________ ________ ________ ________ ________ Alex Blom Jason Briski Susan Lorge Timothy Mauldin Kristopher McKee 3, 5 2, 6 7, 8 4, 9 10, 11 9:00, 10:00 8:00, 11:00 11:00, 12:10 9:00, 12:10 1:10, 2:10 QUESTIONS ARE WRITTEN ON BOTH SIDES OF EACH PAGE. ENTHALPIES OF FORMATION, CONSTANTS, SELECTED EQUATIONS AND A PERIODIC TABLE ARE ON THE LAST PAGE. YOU MAY REMOVE THIS PAGE FOR SCRATCH PAPER. CHEM 177 FINAL EXAM FRIDAY, MAY 4 9:45 – 11:45 A.M. NEW ROOM ASSIGNMENTS FOR FINAL EXAM: Alex Blom Sections 3 and 5 Gilman 1002 Jason Briski Sections 2 and 6 Gilman 1002 Susan Lorge Sections 7 and 8 Gilman 1652 Timothy Mauldin Sections 4 and 9 NEW ! LeBaron 1210 Kristopher McKee Sections 10 and 11 NEW ! LeBaron 1210
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2 1. (3 pts) Which pair of particles are isoelectronic ? A. F , Mg 2+ B. Br , Se C. Ne, Ar D. Al 3+ , P 3– E. All of the above are isoelectronic. 2. (3 pts) Which electron configuration represents an excited state ? A. [He] 2s 2 2p 2 B. [Ar] 4s 2 C. [Ne] 3s 2 3p 5 D. [Ne] 3s 1 3p 1 3. (3 pts) Which electron configuration is impossible ? A. 1s 2 2s 2 2p 6 3s 2 B. 1s 2 2s 2 2p 6 3s 2 3p 6 C. 1s 2 2s 2 2p 6 2d 2 D. 1s 2 2s 2 2p 5 3s 1 4. (3 pts) The number of unpaired electrons in a ground state Mn atom is __. A. one B. two C. three D. five E. six F. seven 5. (4 pts) A photon of light of 450 nm, when compared with light of wavelength 300 nm, has ____ . A. a higher frequency B. lower energy C. a greater velocity D. a shorter wavelength 6. (4 pts) Which set of quantum numbers is correct and consistent with n = 4? A. l = 3, m l = – 3, m s = + 1 2 B. l = 4, m l = + 2, m s = – 1 2 C. l = 2, m l = + 3, m s = + 1 2 D. l = 3, m l = – 3, m s = + 1 7. (3 pts) Which of the following is most likely to be characteristic of an atom showing metallic properties? A. a low atomic number B. a high ratio of protons to neutrons C. more than five valence electrons D. fewer than three valence electrons
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3 8. (3 pts) An element forms a basic oxide XO and a hydride XH 2 . The element X could be __ . A.
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This note was uploaded on 03/26/2008 for the course CHEM 177 taught by Professor Greenbowe during the Spring '06 term at Iowa State.

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177Exam3KeyS07 - SEAT NO DR JOE BURNETT SPRING 2007 THIS...

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