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Periodic Table and Periodicity question

2007 · Q95
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Periodic Table and Periodicity question

2007 · Q95

NEETChemistryPeriodic Table and PeriodicityMCQ+4 / −1
Identify the correct order of the size of the following :
  1. A
    Ca2+ < K+ < Ar < Cl−-− < S2−-−
  2. B
    Ar < Ca2+ < K+ < Cl−-− < S2−-−
  3. C
    Ca2+ < Ar < K+ < Cl−-− < S2−-−
  4. D
    Ca2+ < K+ < Ar < S2−-− < Cl−-−
View written solutionFree

Correct answer: A

Among isoelectronic ions, ionic radius of anions is more than that of cations. Further size of the anion increases with increase in negative charge and size of the cation decreases with increase in positive charge.

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