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Rhodium: Earth's Rarest and Most Expensive Precious Metal
Today, it's the most valuable precious metal on the planet: rhodium, a chemical element with the symbol Rh and atomic number 45. With his chunk of smuggled platinum ore, in a few years Wollaston ...
Royal Society of Chemistry5y
Chemistry in its element: rhodium
It would have been cheaper to buy silver-shiny rhodium metal instead. However, this would have been impractical as this noble platinum-group element is one of the least reactive metals of the periodic ...