Which among the following is the most reactive ?

Solution :
$$ICl$$
Order of reactivity of halogens
$$C{l_2} > B{r_2} > {I_2}$$
But, the interhalogen compounds are generally more reactive than halogens $$({\text{expect}}\,{F_2})$$  , since the bond between two dissimilar electronegative elements is weaker than the bond between two similar atoms i.e, $$X - X$$