The correct increasing order of the ionic radii is

Question

The correct increasing order of the ionic radii is (A) Ca 2+< K +< Cl -< S 2- (B) S 2-< Cl -< Ca 2+< K + (C) K +< S 2-< Ca 2+< Cl - (D) Cl -< Ca 2+< K +< S 2-

Tardigrade Admin · Accepted Answer

In isoelectronic species size propto (1/Z)

Q. The correct increasing order of the ionic radii is

$C a^{2 +} < K^{+} < C l^{-} < S^{2 -}$

$S^{2 -} < C l^{-} < C a^{2 +} < K^{+}$

$K^{+} < S^{2 -} < C a^{2 +} < C l^{-}$

$C l^{-} < C a^{2 +} < K^{+} < S^{2 -}$

In isoelectronic species size $\propto \frac{1}{Z}$

Q. The correct increasing order of the ionic radii is

Ca2+<K+<Cl−<S2−

S2−<Cl−<Ca2+<K+

K+<S2−<Ca2+<Cl−

Cl−<Ca2+<K+<S2−

In isoelectronic species size ∝Z1​

$C a^{2 +} < K^{+} < C l^{-} < S^{2 -}$

$S^{2 -} < C l^{-} < C a^{2 +} < K^{+}$

$K^{+} < S^{2 -} < C a^{2 +} < C l^{-}$

$C l^{-} < C a^{2 +} < K^{+} < S^{2 -}$

In isoelectronic species size $\propto \frac{1}{Z}$