Verified Solution • 2025–26 Session moderate

QAIPMT-2007-Ch-2308: NEET 2007 Chemistry - Class 11 AIPMT-2007-Ch-2308 Solution: Identify the correct order of the size of the following:

Identify the correct order of the size of the following:

Multiple Choice Options

  • A Ca2+<K+<Ar<Cl−<S2−Ca^{2+}<K^+<Ar<Cl^-<S^{2-}
  • B Ar<Ca2+<K+<Cl−<S2−Ar<Ca^{2+}<K^+<Cl^-<S^{2-}
  • C Ca2+<Ar<K+<Cl−<S2−Ca^{2+}<Ar<K^+<Cl^-<S^{2-}
  • D Ca2+<K+<Ar<S2−<Cl−Ca^{2+}<K^+<Ar<S^{2-}<Cl^-

Step-by-Step Verified Solution

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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