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

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Exam 2 – Form A 1. D 2. C 3. E 4. C 5. B 6. B 7. D 8. C 9. A 10. A 11. D 12. D 13. D 14. A 15. C 16. E 17. D 18. A 19. E 20. B 21. E 22. B 23. a) b) H S H O Se O O SP = 1 / 2 (12-8) = 2 SP = 1 / 2 (32-26) = 3 c) H 2 S no SeO 3 2 no d) HS bond order in H 2 S 1 SeO bond order in SeO 3 2 1 e) (2 each) How many sigma bonds are in H 2 S 2 SeO 3 2 3 f) (2 each) How many pi bonds are in H 2 S 0 SeO 3 2 0 g) (2 each) What is/are the bond angle(s) in H 2 S 109 o SeO 3 2 109 o h) H 2 S bent SeO 3 2 trigonal pyramidal i) S in H 2 S sp 3 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 is the bond angle at carbon #5? 2. What is the hybridization at nitrogen #7? 3. What is the shape at carbon #4? 4. What are the bond angles at carbon #1? A) 90 o B) 109 o C) 120 o D) 180 o 5. What is the hybridization at carbon #3?
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