$C a^{2 +}$ has a smaller ionic radius than $K^{+}$ because it has a ____ z/e ratio.

higher

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lower

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equal

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none

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Solution

The correct option is B higher
it has $C a^{2 +}$ has a smaller ionic radius than $K^{+}$ because it has higher z/e ratioIn isoelectronic species, as the number of protons (atomic number) goes on increasing, the size goes on decreasing due to stronger attraction on the electrons.

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