The stability of +1 oxidation state increases | vedclass

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Question

(A) The stability of the $+1$ oxidation state in Group $13$ elements increases as we move down the group from $Al$ to $Tl$. This trend is attributed t

Vedclass · Accepted Answer

$Al < Ga < In < Tl$

Vedclass · Answer

(A) The stability of the $+1$ oxidation state in Group $13$ elements increases as we move down the group from $Al$ to $Tl$. This trend is attributed to the $inert \ pair \ effect$,where the $ns^2$ electrons become increasingly reluctant to participate in bonding due to poor shielding by $d$ and $f$ orbitals. Consequently,the stability of the $+3$ oxidation state decreases,while the stability of the $+1$ oxidation state increases down the group. Therefore,the correct sequence is $Al < Ga < In < Tl$.

The stability of $+1$ oxidation state increases in the sequence:

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