Question

In which of the following pairs of ions the lower oxidation state in aqueous solution is more stable than the other?

• A. $Ti^{+},Ti^{3 +}$
• B. $Cu^{+},Cu^{2 +}$
• C. $Cr^{2 +},Cr^{3 +}$
• D. $V^{2 +},VO^{2 +}(V^{4 +})$

Answer 1

Answer: (A)

$Ti^{+},Ti^{3 +}$

Answer 2

$Ti^{+}$is more stable than $TI^{3 +}$ due to inert pair effect $Cu^{2 +}$is more stable than $Cu^{+}.Cr^{3 +}$ is more stable than $Cr^{2 +}.V^{4 +}$ in aqueous solution is more stable than $V^{2 +}$