Consider the following statements.
I. BeO is insoluble but `BeSO_(4)` is soluble in water.
II. BaO is insoluble but `BaSO_(4)` is soluble in water.
III. Lii is more soluble than Kl in ethano. The true statements are

Options

A. I and II
B. I and III
C. II and III
D. I,II and III

Answer

b

Explanation

If lattice energy `gt` hydration energy, the compound (Beo) is insoluble in water. If lattice energy `lt` hydration energy , the compound `(BeSO_(4))` is soluble in water. Lil is more covalent because `Li^(+)` is smallest and polarised `I^(-)` (anion) to maximum extent, so it is more soluble than KI in ethanol.