Chlorine on reaction with hot and concentrated sodium hydroxide gives

Consider the following reactions :
$(i)$ $F_2 + 2X^{-} \to 2F^{-} + X_2$ $(X = Cl, Br, I)$
$(ii)$ $Cl_2 + 2X^{-} \to 2Cl^{-} + X_2$ $(X = Br, I)$
$(iii)$ $I_2 + 2Br^{-} \to 2I^{-} + Br_2$
Which option has only the correct set of reactions?

In the following reaction,identify the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T.$:
$\underline{S}F_6 + H_2O \longrightarrow$ No reaction

The reactive species in chlorine bleach is

The bond energy of $Cl_2, Br_2$ and $I_2$ follows the order:

The weakest acid $HX$ $(X = F, Cl, Br, I)$ is