DescriptionChromium (II) ion in aqueous solution.jpg
English: Chromium (II) ion in aqueous solution, made by reduction of chromic acid, demonstrating the pure blue color. Some zinc granules can be seen remaining on the bottom of the flask as black solids.
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{{subst:Upload marker added by en.wp UW}} {{Information |Description = {{en|Chromium (II) ion in aqueous solution, made by reduction of chromic acid, demonstrating the pure blue color. Some zinc granules can be seen remaining on the bottom of the flask...