Place the following in order of increasing acid strength.

HBrO2 HBrO3 HBrO HBrO4

A) HBrO2 < HBrO4 < HBrO < HBrO3

B) HBrO < HBrO2 < HBrO3 < HBrO4

C) HBrO2 < HBrO3 < HBrO4 < HBrO

D) HBrO4 < HBrO2 < HBrO3 < HBrO

E) HBrO < HBrO4 < HBrO3 < HBrO2

I think the correct order according to increasing acid strength would be the one in option B. The order is:

HBrO < HBrO2 < HBrO3 < HBrO4

The more oxygen atoms means the easier the hydronium ions is removed in aqueous solution since the oxygen has a high electronegativity.