Arrange halogens reactivity in case of alkyl halides?

The reactivity of halogens in alkyl halides generally follows the trend:

Fluorine > Chlorine > Bromine > Iodine

This means that fluorine is the most reactive halogen in alkyl halides, followed by chlorine, bromine, and iodine. This trend is based on the electronegativity of the halogens, with fluorine being the most electronegative and therefore the most reactive.

Reactivity of Halogens in Alkyl Halides:

The reactivity of halogens in alkyl halides decreases down the group. This means that chlorine is more reactive than bromine, which is more reactive than iodine. This is due to the following factors:

- Bond strength: The bond between carbon and halogen gets weaker as you go down the group. This is because the halogen atoms get larger and less electronegative.
- Polarizability: The halogen atoms become more polarizable as you go down the group. This means that they are more easily deformed by the electric field of the carbon atom.
- Size: The halogen atoms get larger as you go down the group. This makes them more sterically hindered and less likely to react.

The following is the order of reactivity of halogens in alkyl halides:

F > Cl > Br > I