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(A) The reaction of alkanes with fluorine is highly exothermic and difficult to control,often leading to explosive conditions.The initiation step invo

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Fluorine

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(A) The reaction of alkanes with fluorine is highly exothermic and difficult to control,often leading to explosive conditions.The initiation step involves the homolytic cleavage of the $F-F$ bond.$F-F \rightarrow 2\dot{F} ; \Delta H = +158 \ kJ/mol$Once fluorine radicals are formed,the propagation steps are extremely exothermic.$CH_4 + \dot{F} \rightarrow \dot{C}H_3 + HF ; \Delta H = -134 \ kJ/mol$$\dot{C}H_3 + F_2 \rightarrow CH_3F + \dot{F} ; \Delta H = -293 \ kJ/mol$The overall reaction is highly exothermic,which releases enough energy to cause explosions if not carefully controlled.

The reactions of alkanes are explosive with which halogen?

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