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The hydroxides and carbonates of sodium ...

The hydroxides and carbonates of sodium and potassium are easily soluble in water while the corresponding salts of magnesium and calcium are sparingly soluble in water. Explain.

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It is due to large size of sodium and potassium ions then calcium and magnesium ions due to which lattice energies of hydroxide and carbonates of sodium and potassium are lower as compared to calcium and magnesium salt
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