S Block Elements Question 162

Question: The oxide, which is best soluble in $ H_2O $ is

[BHU 2001]

Options:

A) $ Ba{{(OH)}_2} $

B) $ Mg{{(OH)}_2} $

C) $ {{K}^{+}},HCO_3^{-} $

D) $ Ca{{(OH)}_2} $

Show Answer

Answer:

Correct Answer: A

Solution:

$ \xrightarrow[Solubilitydecreasingorder.]{Ba{{(OH)}_2}>Sr{{(OH)}_2}>Ca{{(OH)}_2}>Mg{{(OH)}_2}} $