Which of the following is not correct?

Question

$\begin{array}{1 1}\text{All halogens except fluorine form oxo-acids}\\\text{Hypohalous acids HOCl,HOBr and HOI are all strong acids}\\\text{Hypochlorous acid is the most stable among hypohalous acids}\\\text{Chlorous acid is the only halous acid known}\end{array}$