Bond fission, free radicals, carbocations, carbanions and their stability
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See all →- Among the given compounds I-III, the correct order of bond dissociation energy of C-H bond marked with * is : Answer: 1. II > I > III Key idea: the more s-character in the carbon, and the less stable the radical left behind, the stronger the C-H bond... 1
- The most stable carbocation among the following is: Answer: 1. [structure: methylcyclohexyl carbocation, see figure] Key idea: carbocation stability: tertiary > secondary > primary, and more h... 1
- Which of the following carbocations is expected to be most stable ? Answer: 2. cyclohexadienyl cation with NO ₂ at top carbon, H and Y on the sp ³ carbon, positive charge adjacent (picture) In the intermediat... 1