exam3sp2008f1 - Exam Name_ Form I

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which of the following represent the Lewis structure for Mg? A) B) C) D) E) 1) 2) Use Lewis theory to determine the chemical formula for the compound formed between Ca and N. A) Ca 3 N 2 B) CaN C) CaN 2 D) Ca 2 NE ) C a 2 N 3 2) 3) Place the following elements in order of decreasing electronegativity. SC l S e A) Cl > Se > S B) Se > S > Cl C) Cl > S > Se D) S > Cl > Se E) Se > Cl > S 3) 4) Choose the bond below that is most polar. A) H - IB ) H - FC ) H - Br D) C - HE ) H - Cl 4) 5) Which molecule or compound below contains a pure covalent bond? A) Li 2 CO 3 B) PF 3 C) SCl 6 D) NaCl E) Cl 2 5) 6) Choose the best Lewis structure for BeF 2 . A) B) C) D) E) 6) A 1
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7) Choose the best Lewis structure for CH 2 Cl 2 . A) B) C) D) E) 7) 8) Choose the best Lewis structure for NO 3 . A) B) C) D) E) 8) A 2
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9) Choose the best Lewis structure for SeO 4 2 . A) B) C) D) E) 9) 10) Determine the electron geometry (eg) and molecular geometry(mg) of BCl 3 .
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This note was uploaded on 02/12/2011 for the course CHEM 112 taught by Professor Sttaf during the Spring '03 term at Arkansas Pine Bluff.

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exam3sp2008f1 - Exam Name_ Form I

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