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Yttrium, a rare earth metal, has a silver-grey color and metallic luster. It also appears highly crystalline. Yttrium displays chemical properties similar to those of rare earth elements. It dissolves in both mineral acids and alkalis, which are chemical opposites of one another.
In fact, 1 litre of water will only dissolve about 2 mg of barium sulphate at room temperature. Solubility of the carbonates. The carbonates tend to become less soluble as you go down the Group.