eng-fall07-e8059x04d

eng-fall07-e8059x04d - University of North Florida CHM...

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University of North Florida Exam 4 CHM 2045C, General Chemistry I 5 December 2007 Fall 2007 NAME _____ ________________________ N # _____________________ Instructions: DO NOT BEGIN UNTIL GIVEN THE SIGNAL TO START. The time allotted for this examination is 50 minutes. NO CALCULATORS may be used on this exam. The first page has the periodic table. There are two parts to this exam. For part I, write your answers on the answer sheet. For part II, show all your work for full credit. No extra time will be given to transfer answers to the answer sheet. At the end of the examination, hand in the answer sheet and partial credit portion before leaving the room. Make sure your name is on those pages.
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NAME: ________________________ N #______________________ Exam 4 Part I. For problems 1 – 35, each problem is worth 2 points. Each problem has ONE BEST ANSWER. Write the letter on the answer sheet. 1. The electron configuration for Ca is [a] [Ar] 4p 2 [b] [Ar] 3d 2 [c] [Ne] 4s 2 [d] [Ar] 3s 2 [e] [Ar] 4s 2 2. The electron configuration for phosphorus, P, is [a] 1s 2 2s 2 2p 6 3s 5 [b] 1s 2 2s 2 2p 6 3p 5 [c] 1s 2 2s 2 2p 6 3s 2 3p 6 [d] 1s 3 2s 3 2p 6 3s 3 3p 3 [e] 1s 2 2s 2 2p 6 3s 1 3. What is the full electron configuration of the phosphide ion, P 3- ? [a] 1s 2 2s 2 2p 6 3s 2 [b] 1s 2 2s 2 2p 6 3p 2 [c] 1s 2 2s 2 2p 6 3s 2 3p 6 [d] 1s 3 2s 3 2p 6 3s 3 3p 3 [e] 1s 2 2s 2 2p 6 4. Which one of the following is correct about phosphorus? [a] It is a chalcogen. [b] It is a noble gas. [c] It is a metal. [d] The allotropes of phosphorus are named: red, black and white (or yellow). [e] None of these are correct. 5. Which one of the following is correct about phosphorus? [a] It has three unpaired electrons. [b] It has ten valence electrons. [c] It has five core electrons. [d] It has three valence electrons. [e] None of these are correct. 6. The German scientist Lothar Meyer and this Russian scientist are given credit for developing the modern periodic table by arranging elements by their atomic weights. [a] Nicolai Romanov [b] Yevgeny Kafelnikov [c] Dmitri Mendeleev [d] Mamadou Thiam [e] Josef Dzhugashvili 7. Which one of the following is a characteristic of nonmetals? [a] high electrical conductivity [b] malleability [c] low (absolute values of) electron affinities [d] acidic oxides [e] All of these are NOT characteristics of nonmetals. 8.
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eng-fall07-e8059x04d - University of North Florida CHM...

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