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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.
The differences between the colours of the precipitates of silver chloride and silver bromide are difficult to see unless you have both together to compare. To help distinguish them, we can add dilute ammonia solution. Silver chloride dissolves in the ammonia solution, but silver bromide is insoluble. (Silver bromide will dissolve in concentrated ammonia solution, but silver iodide is insoluble even in concentrated ammonia solution.) Sulfate ion (SO 4 2â) Look at the test for the sulfate ion in Fig.2 below: