Which of the following halogens forms the maximum number of oxoacids?

Give two examples to show the anomalous behaviour of fluorine.

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

Which among the following halogens does not form a polyhalide ion?

$MnO_{2} + HCl \xrightarrow{\Delta} A_{(g)}$
$A_{(g)} + F_{2} (\text{excess}) \rightarrow B_{(g)}$
$B_{(l)} + U_{(s)} \rightarrow C_{(g)} + D_{(g)}$
The gases $A$,$B$,$C$ and $D$ are respectively

The correct increasing order of oxidizing power is: