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JEE Main2012ChemistryStructure of AtomActual

The increasing order of the ionic radii of the given isoelectronic species is :

Options

  1. ACl ⁻, Ca ²⁺, K ⁺, S ²⁻
  2. BS ²⁻, Cl ⁻, Ca ²⁺, K ⁺
  3. CCa ²⁺, K ⁺, Cl ⁻, S ²⁻
  4. DK ⁺, S ²⁻, Ca ²⁺, Cl ⁻

Correct answer

C. Ca ²⁺, K ⁺, Cl ⁻, S ²⁻

Step-by-step solution

For isoelectronic species, as the z/e decreases, ionic radius increases

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