Select the correct ionic mobility order in water?

B e^{2 +} > B a^{2 +}

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L i^{+} > R b^{+}

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I^{-} < C l^{-}

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N a^{+} > M g^{2 +} > A l^{3 +}

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Solution

The correct option is D $N a^{+} > M g^{2 +} > A l^{3 +}$
The correct order of the ionic mobility in water is $N a^{+} > M g^{2 +} > A l^{3 +}$ . As the charge to size ratio of the cation increases, the degree of hydration increases. Hence, the ionic mobility decreases.

So, the correct option is $D$

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Similar questions

N a^{+}

M g^{2 +}

A l^{3 +}

S i^{4 +}

$N a^{+} . M g^{2 +}, A l^{3 +}$ and $S i^{4 +}$ are isoelectronic. The order of their ionic size is

B e^{2 +}

M g^{2 +},

S r^{2 +}

C a^{2 +}

{A l}^{3 +} < {M g}^{2 +} < N a^{+} < F^{-}

B e^{2 +}

M g^{2 +},

S r^{2 +}

C a^{2 +}

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