Which of the following order is correct ?

K^{+} < C a^{2 +} < P^{3 -} < S^{2 -}

: Ionic size

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N a_{(a q)}^{+} > K_{(a q)}^{+} > R b_{(a q)}^{+} > C s_{(a q .)}^{+}

: Electrical conductance

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A l_{(a q)}^{3 +} > M g_{(a q .)}^{2 +} > N a_{(a q)}^{+}

: Hydrated size

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I_{(a q .)}^{-} < B r_{(a q .)}^{-} < C l_{(a q .)}^{-} < F_{(a q .)}^{-}

: Ionic mobility

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Solution

The correct option is C $A l_{(a q)}^{3 +} > M g_{(a q .)}^{2 +} > N a_{(a q)}^{+}$ : Hydrated size
(a) $C a^{2 +} < K^{+} < S^{2 -} < P^{3 -}$ : Ionic size

(b) $N a_{(a q)}^{+} > K_{(a q)}^{+} > R b_{(a q)}^{+} > C s_{(a q .)}^{+}$ : Electrical conductance
(d) $I_{(a q .)}^{-} < B r_{(a q .)}^{-} < C l_{(a q .)}^{-} < F_{(a q .)}^{-}$ : Ionic mobility

Hence, Option "C" is the correct answer.

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