The cation that does not form an amine comple | vedclass

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(B) $Al^{3+}$ does not form an amine complex with excess ammonia because aluminum is a $p-$block element and typically does not form stable coordinati

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$Al^{3+}$

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(B) $Al^{3+}$ does not form an amine complex with excess ammonia because aluminum is a $p-$block element and typically does not form stable coordination complexes with ammonia ligands in the same manner as $d-$block transition metals. $Cd^{2+}$,$Cu^{2+}$,and $Ag^{+}$ are transition metal ions that readily form stable amine complexes such as $[Cd(NH_3)_4]^{2+}$,$[Cu(NH_3)_4]^{2+}$,and $[Ag(NH_3)_2]^+$,respectively.

The cation that does not form an amine complex with excess of ammonia is

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