Q. Consider the ions $K^{+},\ S^{2 -},Cl^{-}\ and\ Ca^{2 +}$. The radii of these ionic species follow the order
A) ${Ca}^{2 +} > K^{+} > Cl^{-} > S^{2 -}$
B) $Cl^{-} > S^{2 -} > K^{+} > {Ca}^{2 +}$
C) ${Ca}^{2 +} > Cl^{-} > K > S^{2 -}$
D) $S^{2 -} > Cl^{-} > K^{+} > {Ca}^{2 +}\$
Explanation
(d)
The correct order of ionic radii of these ions is
${\ S}^{2 -} > Cl^{-} > K^{+} > Ca^{2 +}$.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.