The Total solution for NCERT class 6-12
Thehydroxides and carbonates of sodium and potassium are easily soluble in waterwhile the corresponding salts of magnesium and calcium are sparingly soluble inwater. Explain.
Theatomic size of sodium and potassium is larger than that of magnesium andcalcium. Thus, the lattice energies of carbonates and hydroxides formed bycalcium and magnesium are much more than those of sodium and potassium. Hence,carbonates and hydroxides of sodium and potassium dissolve readily in waterwhereas those of calcium and magnesium are only sparingly soluble.