1.

Name an element from Group-2 which forms an amphoteric oxide and a water soluble sulphate.

Answer»

SOLUTION :Beryllium is an element from group 2 which gives an amphoteric oxide Bed and water soluble SULPHATE`BeSO_(4)`.
`Ba(OH)_(2) +2OH^(-) to [Ba(OH)_(4)]^(2-)`
`Ba(OH)_(2)+2HCl +2H_(2)O to [Ba(OH)_(4)]Cl_(2)`
`BeSO_(4)` is soluble in water due to highest HYDRATION energy. It is much more than lattice energy.


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