The following order is $NOT$ correct for: $HClO < HClO_2 < HClO_3 < HClO_4$

Which of the following halogens exhibits metallic character?

The property which is not true about Fluorine is,

$I_2$ dissolves in $KI$ solution due to the formation of

The correct statement$(s)$ regarding $(i) HClO$,$(ii) HClO_2$,$(iii) HClO_3$,and $(iv) HClO_4$ is(are):
$(A)$ The number of $Cl=O$ bonds in $(ii)$ and $(iii)$ together is two.
$(B)$ The number of lone pairs of electrons on $Cl$ in $(ii)$ and $(iii)$ together is three.
$(C)$ The hybridization of $Cl$ in $(iv)$ is $sp^3$.
$(D)$ Amongst $(i)$ to $(iv)$,the strongest acid is $(i)$.

Iodine dissolves readily in