F05-finalA - Chemistry 12 Final Exam Form A December 12,...

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1 Chemistry 12 Name _______________________ Final Exam Form A Section _______________________ December 12, 2005 Student No. _______________________ IMPORTANT : On the scantron (answer sheet), you MUST clearly fill your name , your student number , section number , and test form (white cover = test form A; yellow cover = test form B). Use a #2 pencil. There are 40 questions on this exam. Check that you have done all of the problems and filled in the first 40 bubbles on the scantron. The maximum score on this exam is 50 points. Your score will be reported in percents (max 100%). Exam policy Calculators with text-programmable memory. No electronic devices, except for simple scientific calculators are allowed (specifically calculators with text-programmable memory or communication capabilities are not allowed). Relevant data and formulas, including the periodic table, are attached at the end of this exam. Your grade will be based only on what is on the scantron form. The answer key will be posted on the web after the exam (under "News"). Hints As you read the question, underline or circle key words to highlight them for yourself. Avoid errors from "mis-reading" the question. Pay attention to units and magnitudes (decimal places) of numbers obtained from calculations. There is no penalty for guessing. 2 CHEMISTRY 12 FINAL EXAM DECEMBER 12, 2005 FORM A ----------------------------------------------------------------------------------------------------------- 1. Using the Bohr model, select the electron transition in a hydrogen atom that results in emission of light with a wavelength of 656 nm. A. n = 2 n = 1 B. n = 3 n = 1 C. n = 3 n = 2 D. n = 1 n = 2 E. n = 2 n = 3 ----------------------------------------------------------------------------------------------------------- 2. Which of these is a permissible set of quantum numbers? A. n = 2 l = 0 m l = 0 m s = –½ B. n = 3 l = 3 m l = 2 m s = ½ C. n = 2 l = 1 m l = –2 m s = –½ D. n = 3 l = 3 m l = 0 m s = ½ E. n = 4 l = –3 m l = –3 m s = –½ ----------------------------------------------------------------------------------------------------------- 3. Choose the atom or ion described by this electron configuration. [Ar] 4s 2 3d 10 4p 6 A. Xe B. S 2– C. Br D. Sc 3+ E. Se 2– ----------------------------------------------------------------------------------------------------------- 4. Rank the sizes of these atoms from largest to smallest : Al In Rb Ar A. In > Al > Rb > Ar B. Rb > In > Al > Ar C. Rb > In > Ar > Al D. In > Rb > Ar > Al E. Ar > Al > Rb > In -----------------------------------------------------------------------------------------------------------
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3 ----------------------------------------------------------------------------------------------------------- 5. Which of these compounds has the largest lattice energy? A. MgO B. CsI C. AlN D. NaF E. GaN ----------------------------------------------------------------------------------------------------------- 6. The best Lewis structure of a molecule containing one atom each of H, C, and N (H connected to C) has: A. There is no proper Lewis structure of a molecule containing these elements. B. a triple bond between C and N, and a non-bonding electron pair on C. C. a double bond between H and C, and a non-bonding electron pair on N.
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This note was uploaded on 05/24/2009 for the course CHEM 110 taught by Professor Hofmann,brucerob during the Fall '08 term at Pennsylvania State University, University Park.

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F05-finalA - Chemistry 12 Final Exam Form A December 12,...

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