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AP EAMCET202017 Sep 2020Morning ShiftChemistryClassification of Elements and Periodicity in PropertiesActual

Choose the smallest ion from the following.

Options

  1. A( Mg ²⁺ )
  2. B( S ²⁻ )
  3. C( Na ⁺ )
  4. D( Cl ⁻ )

Correct answer

A. ( Mg ²⁺ )

Step-by-step 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

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