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This is a list of prices of chemical elements. Listed here are mainly average market prices for bulk trade of commodities. Data on elements' abundance in Earth's crust is added for comparison. As of 2020, the most expensive non-synthetic element by both mass and volume is rhodium.
De Facto Classification of Exchange Rate Arrangements, as of April 30, 2021, and Monetary Policy Frameworks [2]; Exchange rate arrangement (Number of countries) Exchange rate anchor
The spot price of gallium metal reached 1,975 yuan ($269.95) per kg on Oct. 18, up 18% since the start of July and up 8% since Aug. 1, d Chinese gallium prices hit 7-month high as demand improves ...
Gallium does not occur as a free element in nature, but rather as gallium(III) compounds in trace amounts in zinc ores (such as sphalerite) and in bauxite. Elemental gallium is a liquid at temperatures greater than 29.76 °C (85.57 °F), and will melt in a person's hands at normal human body temperature of 37.0 °C (98.6 °F).
The use of metal-free columns allows direct labeling of 68 Ga without prepurification, hence making production of gallium-68-radiolabeled compounds more convenient. The mobile phase is a solvent able to elute (wash out) gallium-68 (III) (68 Ga 3+) after it has been produced by electron capture decay from the immobilized (absorbed) germanium-68.
Gallium-67 (half-life 3.3 days) is a gamma-emitting isotope (the gamma ray emitted immediately after electron capture) used in standard nuclear medical imaging, in procedures usually referred to as gallium scans. It is usually used as the free ion, Ga 3+. It is the longest-lived radioisotope of gallium.
Indium gallium arsenide (InGaAs) and gallium-indium arsenide (GaInAs) are used interchangeably. According to IUPAC standards [2] the preferred nomenclature for the alloy is Ga x In 1-x As where the group-III elements appear in order of increasing atomic number, as in the related alloy system Al x Ga 1-x As.
Gallium palladide (GaPd or PdGa) [2] is an intermetallic combination of gallium and palladium. It has the iron monosilicide crystal structure. [ 3 ] The compound has been suggested as an improved catalyst for hydrogenation reactions .