>What is the order of reactivity of halogens in electrophilic addition reaction via formation of cyclohalonium intermediate? >(A) $\ce{F2}$> $\ce{Cl2}$> $\ce{Br2}$> $\ce{I2}$ >(B) $\ce{I2}$> $\ce{Br2}$> $\ce{Cl2}$> $\ce{F2}$ >(C) $\ce{I2}$> $\ce{Br2}$> $\ce{F2}$> $\ce{Cl2}$ >(D) $\ce{Br2}$> $\ce{Cl2}$> $\ce{I2}$> $\ce{F2}$ I tried to predict it using the mechanism, but couldn't reach a conclusion. Is this based on thermodynamic and kinetic data? Here's the mechanism involving bromine, for reference: [![enter image description here][2]][2] [2]: https://i.sstatic.net/2qxhZ.jpg Could someone provide a *detailed explanation* for the above problem, with data if possible?