Choose the smallest ion from the following.

1. \(\mathrm{Mg}^{2+}\)
2. \(\mathrm{S}^{2-}\)
3. \(\mathrm{Na}^{+}\)
4. \(\mathrm{Cl}^{-}\)

Solution

For isoelectronic set of ions, higher the charge on cation, it will be smaller and that on anion will be larger. The order of ionic radii will be

Asked in: AP EAMCET 2020 (17 Sep Shift 1)

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