The incorrect stability order of +3 and +1 st | vedclass

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Question

(A) In the $13^{th}$ group,the stability of the $+1$ oxidation state increases down the group due to the inert pair effect,while the stability of the

Vedclass · Accepted Answer

$Ga^{3+} < In^{3+} < Tl^{3+}$

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(A) In the $13^{th}$ group,the stability of the $+1$ oxidation state increases down the group due to the inert pair effect,while the stability of the $+3$ oxidation state decreases down the group.For $+3$ ions,the stability order is $Al^{3+} > Ga^{3+} > In^{3+} > Tl^{3+}$. Thus,$Ga^{3+} For $+1$ ions,the stability order is $Ga^{+} For $Tl$,$Tl^{+}$ is more stable than $Tl^{3+}$ due to the inert pair effect.For $Ga$,$Ga^{3+}$ is more stable than $Ga^{+}$.Therefore,the statement $Ga^{3+} < In^{3+} < Tl^{3+}$ is incorrect.

The incorrect stability order of $+3$ and $+1$ states of $13^{th}$ group elements (boron family) is

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