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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.
Aqua regia or Royal water can dissolve metals. It is a mixture of conc.nitric acid and conc.hcl in the ratio of 1:3. Remember none of the above mentioned acids will dissolve the metals in the absence of other. adhi Â· 9 years ago.