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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 procedure is as follows: 1  Step 1: Cover the surface of the slide with crystal violet for one minute. 2  Step 2: Gently rinse the stain off the slide. 3  Step 3: Cover the slide with Gram's iodine for one minute. 4  Step 4: Gently rinse the Gram's iodine off the slide. 5  Step 5: Decolorize the slide with 95% ethanol.