Which of the following order ls correct with respect to the given property?

Stability of conjugate base is ${\mathrm{ClO}}^{-}<{\mathrm{ClO}}_2^{-}<{\mathrm{ClO}}_3^{-}<{\mathrm{ClO}}_4-$.

Chlorine is less electronegative than oxygen. More electrons are drawn away from the $\mathrm{O}–\mathrm{H}$ bond and the $\mathrm{O}–\mathrm{H}$ connection weakens as the number of O atoms connected to Cl rises. The acid's potency is boosted by this.
The list of acids in decreasing order of acidity is ${\mathrm{HClO}}_4>{\mathrm{HClO}}_3>{\mathrm{HClO}}_2>\mathrm{HClO}$.