Question

Statement 1:$Cu^{+}_{(aq)}$ has less stable nature than $Cu^{2+}_{(aq)}$ but $Fe^{3+}_{(aq.)}$ is more stable than $Fe^{2+}_{(aq.)}$
Statement 2: Half-filled and completely filled, sub-shells are more stable.

• A. If both Statement $1$ and Statement $2$ are true and the statement $2$ is the correct explanation of the statement $1$.
• B. If both Statement $1$ and Statement $2$ are true but statement $2$ is not the correct explanation of the statement $1$.
• C. If Statement $1$ is true but Statement $2$ is false.
• D. If Statement $1$ is false but Statement $2$ is true

Answer 1

Answer: (B)

In $C u^{+}$, no double outer shell has $3 d^{10}$ or completely filled configuration but hydration energy of $C u^{+}(a q .)$ is more.