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As of 2020, the most expensive non- synthetic element by both mass and volume is rhodium. It is followed by caesium, iridium and palladium by mass and iridium, gold and platinum by volume. Carbon in the form of diamond can be more expensive than rhodium. Per-kilogram prices of some synthetic radioisotopes range to trillions of dollars.
The price for palladium reached an all-time high of $2,981.40 per ounce on May 3, 2021, [95] [96] driven mainly on speculation of the catalytic converter demand from the automobile industry. Palladium is traded in the spot market with the code "XPD".
As of 21 November 2022, the platinum spot price in New York was $980 per ounce, compared to $1,742 per ounce for gold and $20.84 per ounce for silver. Platinum is traded in the spot market with the code "XPT". When settled in United States dollars, the code is "XPTUSD".
A pennyweight ( dwt) is a unit of mass equal to 24 grains, 20 of a troy ounce, 240 of a troy pound, approximately 0.054857 avoirdupois ounce [1] and exactly 1.55517384 grams. [2] It is abbreviated dwt, d standing for denarius – (an ancient Roman coin), and later used as the symbol of an old British penny (see £sd ).
Tech Plus by AOL will provide around-the-clock tech support for all your devices coupled with computer and digital data protection services. • Tech Plus by AOL - Platinum - Tech Plus Platinum includes top of the line products to help protect your identity, personal data and devices, so that you have more control over your digital life.
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". Platinum is a member of the platinum group of elements and group 10 of the periodic table of elements.
Platinum–iridium alloy. The international prototype of the kilogram (IPK) is an artifact standard of platinum–iridium alloy that was defined as having a mass of exactly one kilogram. Platinum–iridium alloys are alloys of the platinum group precious metals platinum and iridium . Typical alloy proportions are 90:10 or 70:30 (Pt:Ir).
The platinum-group metals ( PGMs ), also known as the platinoids, platinides, platidises, platinum group, platinum metals, platinum family or platinum-group elements ( PGEs ), are six noble, precious metallic elements clustered together in the periodic table. These elements are all transition metals in the d-block (groups 8, 9, and 10, periods ...
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