1C_S11_Midterm_1_Key

1C_S11_Midterm_1_Key - Chem 1C Russak Midterm 1 Key 20...

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Chem 1C Russak Midterm 1 Key 20 April 2011 You will lose 10 % if you do not fill your perm number correctly, forget to bubble the test form, or forget to put your name on the Scantron. There is only 1 correct answer for each question, marking more than one answer will cause you to get that question wrong. There are no penalties for guessing, so you should fill in an answer even if you don’t know it.
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Chem 1C Russak Midterm 1 Key 20 April 2011 1. In neutral molecules, how many bonds are commonly formed by nitrogen? And how many by oxygen? A. 5 and 6 B. 4 and 2 C. 3 and 6 D. 4 and 6 E. 3 and 2 2. Which one of the following Lewis structures is definitely incorrect? A. BF 3 B. XeO 3 C. N 2 D. AlCl 4 ¯ E. NH 4 + 3. Which one of the following Lewis structures is definitely incorrect? A. NO B. HCN C. NO 2 ¯
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Chem 1C Russak Midterm 1 Key 20 April 2011 D. SO 3 2 ¯ E. PCl 5 4. Which one of the following Lewis structures is definitely incorrect? A. NO 2 B. BeCl 2 C. CO 3 2 ¯ D. CH 4 E. SO 2 5. Select the best Lewis structure for ClCN. A. B. C.
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Chem 1C Russak Midterm 1 Key 20 April 2011 D. E. 6. The formal charges on Cl and O in the structure shown for the ClO ¯ ion are, respectively: A. 0 and -1 B. -1 and 0 C. 1 and -2 D. -2 and 1 E. None of these choices is correct. 7. Considering all the bonds in a molecule with trigonal bipyramidal geometry, what are the bond angles present? A. 120 ° only B. 90 ° only C. 180 ° only D. 60 ° and 90 ° only E. 90 ° , 120 ° and 180 ° 8. What is the molecular shape of N 2 O as predicted by the VSEPR theory? A.
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This note was uploaded on 09/09/2011 for the course CHEM 1C taught by Professor Hooker during the Spring '06 term at UCSB.

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1C_S11_Midterm_1_Key - Chem 1C Russak Midterm 1 Key 20...

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