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Exam2- C Key - Exam 2 Form C 1 B 2 B 3 C 4 D 5 C 6 D 7 D 8...

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Exam 2 – Form C 1. B 2. B 3. C 4. D 5. C 6. D 7. D 8. C 9. A 10. D 11. B 12. B 13. E 14. C 15. E 16. A 17. C 18. C 19. D 20. B 21. A 22. D 23. a) b) S C S O Se O O SP = 1 / 2 (24-16) = 4 SP = 1 / 2 (32-26) = 3 c) CS 2 yes SeO 3 2 no d) CS bond order in CS 2 2 SeO bond order in SeO 3 2 1 e) (2 each) How many sigma bonds are in CS 2 2 SeO 3 2 3 f) (2 each) How many pi bonds are in CS 2 2 SeO 3 2 0 g) (2 each) What is/are the bond angle(s) in CS 2 180 o SeO 3 2 109 o h) CS 2 linear SeO 3 2 trigonal pyramidal i) C in CS 2 sp Se in SeO 3 2 sp 3
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For the first nine questions, consider this molecule. (Note: All atoms obey the octet rule. Lone pairs have not been shown, but must be considered when answering these questions.) C C C C C C C O H C H C H C N H C H H O H H H H H 1 2 3 4 5 6 7 8 9 1. What are the bond angles at carbon #8? 2. What is the hybridization at carbon #2? 3. What is the shape at carbon #3? 4. What is the bond angle at carbon #6? A) 90 o B) 109 o C) 120 o D) 180 o 5. What is the hybridization at oxygen #9?
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