Practice Exam II - Answers - CHM 238 Organic Chemistry I...

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CHM 238 - Organic Chemistry I - Practice Exam II Answers 1. B 2. D 3. C 4. C 5. D 6. C 7. A 8. B 9. C 10. B 11. B 12. B 13. B 14. B 15. C 16. C 17. D 18. A 19. B 20. D 21. A 22. B 23. A 24. D 25. B 26. B 27. C 28. A 29. B 30. A 31. B 32. C 33. B 34. D 35. C 36. B 37. A 38. D 39. C 40. B 41. C 42. C 43. B 44. B 45. C 46. C 47. C 48. C 49. B 50. A 51. A 52. A 53. D 54. C 55. C 56. A 57. B 58. B 59. B 60. C 61. A 62. D 63. B 64. D 65. D 66. B 67. B 68. C 69. B 70. D 71. C 72. C 73. F 74. D 75. D 76. A 77. E 78. D 79. C 80. D 81. C 82. E 83. C 84. E 85. B 86. B 87. D 88. D 89. C 90. B 91. A
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CHM 238 - Organic Chemistry I - Practice Exam II Answers When two atoms approach each other, their ATOMIC ORBITALS interact and produce a new set of molecular orbitals that are shared by the two atoms. If one of these is HIGHER IN ENERGY than the original atomic orbitals it is called an anti-bonding orbital. But if it is LOWER IN ENERGY it is called a bonding orbital. These new orbitals that have a build up of electron density on the axis connecting the two atoms make up a SIGMA orbital. If the build up of electron density is above and below the axis the orbital makes up a PI orbital. In an orbital, the
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