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AP EAMCET202318 May 2023Evening ShiftChemistryClassification of Elements and Periodicity in PropertiesActual

The ion with smallest radius among the following is

Options

  1. ACa ²⁺
  2. BK ⁺
  3. CTi ⁴⁺
  4. DSc ³⁺

Correct answer

C. Ti ⁴⁺

Step-by-step solution

All the given species have the elements belonging to the same period and ionic radii decrease in a period from left to right. Ti ⁴⁺ lies to the right of the other species and would be even more small due to a greater positive charge. Thus, order of radii would be :- ` K ⁺> Ca ²⁺> Sc ³⁺> Ti ⁴⁺

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