Which of the following gives a free radical reaction when reacting with alkanes?
Correct answer: C. Halogen
- A. Nitric acid
- B. Oxygen
- C. Halogen
- D. All of these
Explanation
Reason: Alkanes undergo very few reactions. One of these is the reaction with halogens to form halogenoalkanes. Such reactions occur through free radical substitution.
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About Free Radical Substitution
Free radical substitution explains how alkanes react with halogens under ultraviolet light or heat through initiation, propagation and termination steps. The mechanism involves homolytic bond fission and radical intermediates, while product formation depends on the relative stability of radicals and differs from ionic substitution.
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