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Platinum is a chemical element; it has symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name originates from Spanish platina, a diminutive of plata "silver". [7] [8] Platinum is a member of the platinum group of elements and group 10 of the periodic table of ...
Naturally occurring platinum and platinum-rich alloys were known by pre-Columbian Americans for many years. [5] However, even though the metal was used by pre-Columbian peoples, the first European reference to platinum appears in 1557 in the writings of the Italian humanist Julius Caesar Scaliger (1484–1558) as a description of a mysterious metal found in Central American mines between ...
Platinum is traded in the spot market with the code "XPT". When settled in United States dollars, the code is "XPTUSD". As the cost of platinum per ounce fell, the cost per ounce for other metals in the platinum group - especially palladium - rose strongly. As of November 2022, palladium sits at around US$1900 per ounce, compared to US$980 for ...
Other precious metals include the platinum group metals: ruthenium, rhodium, palladium, osmium, iridium, and platinum, of which platinum is the most widely traded. [1] The demand for precious metals is driven not only by their practical use but also by their role as investments and a store of value. Historically, precious metals have commanded ...
The most notable examples are the Platinum cat, [8] and Platinum Noble by the Isle of Man, Canadian Platinum Maple Leaf, [9] Chinese Platinum Panda and Australian Platinum Koala. [citation needed] The minting of a trillion-dollar platinum coin was proposed as a solution to the 2023 United States debt-ceiling crisis.
Naturally occurring platinum (78 Pt) consists of five stable isotopes (192 Pt, 194 Pt, 195 Pt, 196 Pt, 198 Pt) and one very long-lived (half-life 4.83×10 11 years) radioisotope (190 Pt). There are also 34 known synthetic radioisotopes, the longest-lived of which is 193 Pt with a half-life of 50 years. All other isotopes have half-lives under a ...
Manufacturers use its alloys with platinum, iridium, and other platinum-group metals to make fountain pen nib tipping, electrical contacts, and in other applications that require extreme durability and hardness. [12] Osmium is among the rarest elements in the Earth's crust, making up only 50 parts per trillion . [13] [14]
The measurement of sales of popular music starts high relative to the wedding anniversary scale, concentrating on gold and platinum (see gold album).Likewise, credit card companies usually have a "gold card" and a "platinum card" (many formerly had a "silver card" then followed by a "gold card", but due to similarity in appearance between silver and platinum these were often discontinued with ...
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