Why does the solubility of alkaline earth metal carbonates and sulphates in water decrease down the group ?

Solubility of alkaline earth metal carbonates in water is as follows:

1) Why does the solubility of alkaline earth metal hydroxides in water increases down the group? ii)Draw the structre of BeCl_(2) in vapour state and solid state. iii) Mention the similarities between beryllium and magnesium.

Solubility of the alkaline earth's metal sulphates in water decreases in the sequence

Solubility of the alkaline earth's metal sulphates in water decreases in the sequence

Why does the solubility of alkaline earth metal hydroxides in water increase down the group?