Test 3 - Chem. 212 (01/02/03) WINONA STATE UNIVERSITY Test...

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Chem. 212 WINONA STATE UNIVERSITY Nov. 20, 2006 (01/02/03) Test #3 - 50 Marks Dr. Ng Name___________________________________Signature_________________________________ BOX# ______ ( L A S T , F I R S T ) General Instructions: Use atomic and molecular weights given in the question; otherwise, use the attached periodic table. Note that information on the attached periodic table could be helpful. PART A: Multiple Choice ( 15 x 2 each = 30 marks ). Circle the LETTER corresponding to the ONE best/correct answer. [30] 1. The term “octahedral” shape for a solid refers to the number of ? (a) surrounding atoms (b) faces of the shape (c) electrons (d) central atoms (e) none of these 2. Which of the following molecules is nonpolar? 43 3 2 (a) CCl (b) NH (c) CHCl (d) H S (e) none of these 3. Which of the following is the least electronegative? (a) F (b) O (c) Al (d) Be (e) Ba 4. Which of the following is most likely to be classified as a covalent compound? 22 (a) NaCl (b) KF (c) CaCl (d) F (e) KCl 5. Which of the following elements (as a central atom) is least likely to have more than an octet of electrons around it?
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Test 3 - Chem. 212 (01/02/03) WINONA STATE UNIVERSITY Test...

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