The Conversation on MSN8d
Why are rubies red and emeralds green? Their colors come from the same metal in their atomic structure
But how can one element—chromium—create the red color of a ruby and green color of an emerald? Rubies and emeralds have the ...
Royal Society of Chemistry5y
Chemistry in its element: chromium
dark red chromium(VI) oxide, orange-red lead chromate, bright yellow sodium chromate, brilliant chrome green (that's chrome(III) oxide), light blue chromium(II) chloride, and violet anhydrous chromium ...