Question

Assertion :$A{g}_{2}S$ is much less soluble in water than $A{g}_{2}O$. Reason: $S^{2-}$ is much larger than $O^{2-}$; so polarization of $S^{2-}$ is higher than $O^{2-}$.

• A. The Assertion is true, Reason is true and Reason is the correct explanation for Assertion
• B. The Assertion is true, Reason is true and Reason is NOT the correct explanation for Assertion
• C. The Assertion is true, Reason is false.
• D. The Assertion is false, Reason is true.

Answer 1

The correct option is A The Assertion is true, Reason is true and Reason is the correct explanation for Assertion

When a size of the anion increases then the polarization of anion increases and covalent character also increases and hence solubility in polar solvent decreases.
$S^{2-}$ is much larger than $O^{2-}$, so polarization of $S^{2-}$ is higher than $O^{2-}$.
Hence, $A{g}_{2}S$ is much less soluble in water than $A{g}_{2}O$.
Thus, The Assertion is true, Reason is true and Reason is the correct explanation for Assertion