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Periodic Table and Periodicity question

2010 · Q119
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Periodic Table and Periodicity question

2010 · Q119

NEETChemistryPeriodic Table and PeriodicityMCQ+4 / −1
The correct order of the decreasing ionic radii among the following isoelectronic species is
  1. A
    Ca2+ > K+ > S2−-− > Clll−-−
  2. B
    Clll−-− > S2−-− > Ca2+ > K+
  3. C
    S2−-− > Cl−-− > K+ > Ca2+
  4. D
    K+ > Ca2+ > Cl−-− > S2−-−
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