Navigate

The correct order of the decreasing ionic radii among the following isoelectronic

The correct order of the decreasing ionic radii among the following isoelectronic species are :

Options

(a) Ca²⁺ > K⁺ > S²⁻ > Cl⁻
(b) Cl⁻ > S²⁻ >Ca²⁺ > K⁺
(c) S²⁻ > Cl⁻ >K⁺ >Ca²⁺
(d) K⁺ > Ca²⁺ > Cl⁻ > S²⁻

Correct Answer:

S²⁻ > Cl⁻ >K⁺ >Ca²⁺

Explanation:

Among the isoelectronic species, size increases with the increase in negative charge. Thus S has the highest negative charge and hence largest in size followed by Cl, K and Ca

AIPMT2010
admin:

Related Questions

  1. Enantiomers
  2. In HS⁻, I⁻, R-NH₂, NH₃ order of proton accepting tendency will be
  3. The correct order of ionization energy of C, N, O, F is
  4. which of the following acid reduces Tollen’s reagent
  5. The mole heat capacity of water at constant pressure, C, is 75 J K⁻¹mol⁻¹.