Rubidium Ion

The univalent metal yields univalent ions, analogous to those of potassium, but has a greater electroaffinity, its salts being more readily ionized. This property manifests itself in the large heat of ionization, 62.6 Cal., in the ready solubility of most of its salts, and in the comparatively slight tendency to form complex molecules. Only salts with strong anions, such as ClO₃', ClO₄', NO₃', Al(SO₄)₂', and PtCl₆'', exhibit slight solubility.