Chemistry - Complete s-block Question with Solution | TestHub

${\mathrm{B}\mathrm{e}\mathrm{S}\mathrm{O}}_4$is most soluble because hydration energy is more than lattice energy

${\mathrm{B}\mathrm{e}\mathrm{S}\mathrm{O}}_4>{\mathrm{M}\mathrm{g}\mathrm{S}\mathrm{O}}_4>{\mathrm{C}\mathrm{a}\mathrm{S}\mathrm{O}}_4>{\mathrm{S}\mathrm{r}\mathrm{S}\mathrm{O}}_4>{\mathrm{B}\mathrm{a}\mathrm{S}\mathrm{O}}_4$

Hydration energy decreases, hence solubility decreases