What pKa range is typical for oxyacids with no non-hydroxyl oxygen atoms?

For oxyacids with the general formula ${\text{XO}}_n(\text{OH}{)}_m$, the number of non-hydroxyl oxygen atoms is represented by $n$. When $n=0$—meaning the molecule contains no non-hydroxyl oxygen atoms—the typical $p{K}_a$ range is between 8 and 11.1

Examples of such compounds include $\text{ClOH}$ and ${\text{Si(OH)}}_4$. This acidity trend is attributed to the distribution of the negative charge of the anion across the oxygen atoms; as $n$ increases, the charge is shared among more equivalent oxygen atoms, which lowers the energy of the anion and increases the strength of the acid.1