I was looking over the solubility of group 2 hydroxides and saw that they become more soluble down the group and so more alkaline in solution. But now having done A2 chemistry, this seems suprising as I would've expected the enthalpy of hydration to become less exothermic down the group as atomic radius increases whilst charge remains the same, and so more soluble in aqueous solution. Can anyone help with where I'm going wrong here?