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Grade 11Inorganic Chemistry

Why solubility of the alkali metal increase down the group whereas alkaline earth metal decrease down the group

Profile image of john
12 Years agoGrade 11
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1 Answer

Profile image of ruchi yadav
12 Years ago
Solubility:
In case of alkali metals: Nitrates, carbonates and sulphates of alkali metals are
soluble in water. In alkali metals lattice energies decrease more rapidly than the
hydration energies, therefore their solubility increases down the group.
In case of alkaline earth metals: Nitrates of all alkaline earth metals are soluble
in water but their solubility decreases down the group because their hydration
energies decrease more rapidly than their lattice energies.

Thank You
Ruchi
Askiitians Faculty