Relative stability orders of +1 and +3 oxidat | vedclass

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Question

(A) Due to the inert pair effect,the stability of the $+1$ oxidation state increases down the group $13$ elements because the $ns^2$ electrons become

Vedclass · Accepted Answer

$Tl^{+} > In^{+} > Ga^{+}, Ga^{3+} > In^{3+} > Tl^{3+}$

Vedclass · Answer

(A) Due to the inert pair effect,the stability of the $+1$ oxidation state increases down the group $13$ elements because the $ns^2$ electrons become more reluctant to participate in bonding.Thus,the stability order for the $+1$ state is $Tl^{+} > In^{+} > Ga^{+}$.Conversely,the stability of the $+3$ oxidation state decreases down the group.Thus,the stability order for the $+3$ state is $Ga^{3+} > In^{3+} > Tl^{3+}$.Therefore,the correct order is $Tl^{+} > In^{+} > Ga^{+}$ and $Ga^{3+} > In^{3+} > Tl^{3+}$.

Relative stability orders of $+1$ and $+3$ oxidation states of $Ga, In, Tl$ are respectively:

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