Of the following,the ion with the smallest io | vedclass

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(D) The given ions are $K^{+}$,$Ca^{2+}$,$Ti^{3+}$,and $Ti^{4+}$.These ions are isoelectronic,meaning they all have the same number of electrons ($18$

Vedclass · Accepted Answer

$Ti^{4+}$

Vedclass · Answer

(D) The given ions are $K^{+}$,$Ca^{2+}$,$Ti^{3+}$,and $Ti^{4+}$.These ions are isoelectronic,meaning they all have the same number of electrons ($18$ electrons).For isoelectronic species,the ionic radius decreases as the nuclear charge (atomic number) increases.The atomic numbers are: $K (19)$,$Ca (20)$,and $Ti (22)$.Since $Ti^{4+}$ has the highest nuclear charge $(Z = 22)$ among the given ions,it exerts the strongest attraction on the electrons,resulting in the smallest ionic radius.Therefore,the correct option is $(D)$.

Of the following,the ion with the smallest ionic radius is

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