162+Fall+11EXAM+I+KEY

162+Fall+11EXAM+I+KEY - Chemistry 1211 Exam III Key(Answers...

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Chemistry 1211 Exam III – Key (Answers on last page) Summer, 2008 Name__________________________ All notes, books, etc., must be placed out of sight. Please read each of the problems carefully. If something is not clear, please ask. The exam consists of 37 problems on 5 pages with some extra credit opportunities on the sixth page. Make sure your exam is complete. The exam is worth 100 points with each of the problems labeled as to its point value. Please print your name on both the exam copy and the ScanTron ® answer sheet. Answers to the multiple choice are to be placed on the ScanTron ® sheet. Other answers should be placed in the space provided and written legibly. If I cannot read it -- it is wrong. You MUST show your work clearly for the problems indicated in order to receive full credit. Please include an explanation whenever asked to or whenever necessary to make your answer clear. If I cannot understand it -- it is wrong. Please put your name on every page of the exam. There are scratch papers and periodic tables available for your use. If you require data, please ask. As usual, no cheating is allowed. Good Luck! V-0708
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Chemistry 1211 Exam III Page 2 Name__________________________________ The first part of the exam consists of 36 multiple choice questions. Please put your final answers on the ScanTron ® answer sheet. You may write on the exam, but only the answer sheet answer will count for the multiple choice questions. Each of these is worth 2½ points. 1. Atomic radius generally increases as we move… a. down a group and from right to left across a period b. up a group and from left to right across a period c. down a group and from left to right across a period d. up a group and from right to left across a period e. down a group; the period position has no effect 2. Of the choices below, which give the correct order for first ionization energies? a. Cl > S > Al >Ar > Si b. Ar > Cl > S > Si > Al c. Al > Si > S > Cl > Ar d. Cl > S > Al > Si > Ar e. S > Si > Cl > Al > Ar 3. Consider the general valence electron configuration of ns 2 np 5 and the following statements: (i) elements with this electron configuration are expected to form -1 anions (ii) elements with this electron configuration are expected to form +1 cations (iii) elements with this electron configuration are nonmetals (iv) elements with this electron configuration belong to Group VII (same as 17) Which statements are true? a. (i) and (ii)
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162+Fall+11EXAM+I+KEY - Chemistry 1211 Exam III Key(Answers...

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