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Physical Properties of Carbon Family

Choose the co...

Question

Choose the correct order for the radii of $H g^{+ 1}$ and $H g^{2 +}$ .

H g^{+ 1} < H g^{2 +}

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H g^{1 +} > H g^{2 +}

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H g^{1 +} = H g^{2 +}

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H g^{1 +} \leq H g^{2 +}

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Solution

The correct option is B $H g^{1 +} > H g^{2 +}$
The Cation with the greater positive charge will have a smaller radius because of the greater attraction of the electrons to the nucleus.
Therefore, correct order is: $H g^{1 +} > H g^{2 +}$

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