Which step is the rate-determining step in the mechanism of radical halogenation?

Question

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In the mechanism of radical halogenation, the rate-determining step is the propagation step. This is because it involves the formation of the most stable radical intermediate, which determines the overall rate of the reaction. The initiation step, where radicals are generated from a molecule of the halogen, and the termination step, where radicals recombine to form a non-radical product, do not determine the overall rate of the reaction. The initiation and propagation steps together determine the rate of chain initiation, but not the rate of the overall reaction.

Which Step Is the Rate-Determining Step in the Mechanism of Radical