Among the following pairs of ions, which pair has a lower oxidation state in aqueous solution more stable than the other?

{T i}^{+}, {T i}^{3 +}

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{F e}^{+ 1}, {F e}^{+ 3}

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{C r}^{2 +}, {C r}^{3 +}

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V^{2 +}, {V O}^{2 +}

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Solution

The correct option is A ${T i}^{+}, {T i}^{3 +}$
$T i^{+}$ is more stable than $T i^{3 +}$ because of the inert pair effect. Thus $T i^{3 +}$ changes to $T i^{+}$ thereby acting as an oxidizing agent.

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Similar questions

Which one of the following ions is the most stable in aqueous solution?
(Atomic number. Ti = 22, V = 23, Cr = 24, Mn = 25)

M n^{3 +}, C r^{3 +}, V^{3 +}

T i^{3 +}

^{3 +}

F e^{+ 3}

F e^{+ 2}

F e^{+ 3}

F e^{+ 2}

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