Order of reactivity of halogens towards alkanes is:

Explanation

The order of reactivity of halogens towards alkanes, from highest to lowest, is as follows:1. Fluorine (F)2. Chlorine (Cl)3. Bromine (Br)4. Iodine (I)This order is based on the relative strengths of the carbon-halogen bonds in alkyl halides formed during the halogenation reaction. Fluorine is the most reactive halogen and is highly electronegative, leading to the formation of the strongest carbon-fluorine bond. Chlorine is less reactive than fluorine but still more reactive than bromine and iodine. Bromine is less reactive than both fluorine and chlorine but more reactive than iodine. Iodine is the least reactive halogen and tends to exhibit sluggish reactions with alkanes.