MolSynapsequestion bank

MolSynapse / Question bank / General Organic Chemistry I: Electronic Effects / Applications: stability of carbocations, carbanions, free radicals

NEET levelSingle correct optionDifficulty 1 of 3g1200

Which of the following free radicals is the most stable?

A $CH X_{3} CH X_{2}^{∙}$
B $(CH X_{3}) X_{3} C^{∙}$
C $CH X_{3}^{∙}$
D $(CH X_{3}) X_{2} CH^{∙}$

Answer: B

Alkyl radicals are stabilised by hyperconjugation with alpha C-H bonds. The tertiary radical has nine alpha hydrogens, so it is the most stable.

Practice General Organic Chemistry I: Electronic Effects More on Applications: stability of carbocations, carbanions, free radicals

Previous questionNext question

More questions on Applications: stability of carbocations, carbanions, free radicals