Noble metals, such as gold and platinum, get their name from their rarity in occurrence and because they don't easily oxidize or corrode when exposed to the atmosphere. It takes a highly corrosive mixture of hydrochloric acid and nitric acid (aka, "aqua regia") to dissolve gold or platinum. In fact, Aqua regia (which is Latin for "regal water") is named for its ability to dissolve "noble" metals. Due to their desirable properties, noble metals have found use particularly in jewelry making as well as chemical catalysts. Here are a few examples of some recent findings related to noble metals.
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