Periodic trend of acid strength

[305144105]

When you move across a period, acid strength increases along with electronegativity.
When you move down a group, acid strength increases along with bond length (even though electronegativity increases).

Does the increase in bond length always negate the effect of increase in electronegativity?
Why is HBrO2 weaker than HClO2, despite it having a longer bond?

[Ibrahim Malik 1H]

In the case of HBrO2 and HClO2, it is the O--H bond that is getting broken, and because Cl has a higher electronegativity it is the more stable atom after the hydrogen atom leaves, making HClO2 the stronger acid.

[Lauryn Shinno 2H]

You can use bond length when referring to an A-H bond like HBr and HCl. However, HBrO2 and HClO2 have the same A-H bond being broken (O-H). Therefore, you have to use electronegativity to determine their strengths instead.