Which Haloalkane Is Most Reactive?

In order for anything to react with the halogenoalkanes, the carbon-halogen bond has got to be broken. Because that gets easier as you go from fluoride to chloride to bromide to iodide, the compounds get more reactive in that order. Iodoalkanes are the most reactive and fluoroalkanes are the least.

What is the order of reactivity of haloalkanes?

Thus, the order of reactivity of haloalkanes towards SN1 reaction is Tertiary halide > Secondary halide > Primary halide.

Which is more reactive haloalkanes and haloalkanes?

In haloarenes there is double bond character b/w carbon and halogen due to resonance effect which makes him less reactive. In benzene carbon being sp2 hybridised which is smaller in size than sp3 present in haloalkanes . ... Haloalkanes are more reactive than haloarenes.