S Block Elements

Identify the correct statements with respect to compounds of beryllium.

I. Beryllium oxide is amphoteric in nature.

II. Beryllium hydride is formed by the reaction of beryllium with hydrogen.

III. Beryllium hydride is formed by the reaction of beryllium chloride with lithium aluminium hydride.

IV. Beryllium sulpahte is the least soluble sulphate among the sulphates of alkaline earth metals.