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New York: The International Nickel Company, Inc., 1941: 16. — "Values ranging from 21.3 to 21.5 gm/cm 3 at 20 °C have been reported for the density of annealed platinum; the best value being about 21.45 gm/cm 3 at 20 °C." 21.46 g/cm 3 — Rose, T. Kirke. The Precious Metals, Comprising Gold, Silver and Platinum. New York: D. Van Nostrand ...
A density of more than 5 g/cm 3 is sometimes mentioned as a common heavy metal defining factor [36] and, in the absence of a unanimous definition, is used to populate this list and, unless otherwise stated, guide the remainder of the article.
This table shows the number of heavy metal criteria met by each metal, out of the ten criteria listed in this section i.e. two based on density, three on atomic weight, two on atomic number, and three on chemical behaviour. [n 1] It illustrates the lack of agreement surrounding the concept, with the possible exception of mercury, lead and bismuth.
A heavy metal is any relatively dense metal, either single element or multielement. [46] Magnesium, aluminium and titanium alloys are light metals of significant commercial importance. [47] Their densities of 1.7, 2.7 and 4.5 g/cm 3 range from 19 to 56% of the densities of other structural metals, [48] such as iron (7.9) and copper (8.9) and ...
Osmium is a hard, brittle, blue-gray metal, and the densest stable element—about twice as dense as lead. The density of osmium is slightly greater than that of iridium ; the two are so similar (22.587 versus 22.562 g/cm 3 at 20 °C) that each was at one time considered to be the densest element.
The only metal having an ionisation energy higher than some nonmetals (sulfur and selenium) is mercury. [citation needed] Mercury and its compounds have a reputation for toxicity but on a scale of 1 to 10, dimethylmercury ((CH 3) 2 Hg) (abbr. DMM), a volatile colourless liquid, has been described as a 15. It is so dangerous that scientists have ...
Palladium has been used as a precious metal in jewelry since 1939 as an alternative to platinum in the alloys called "white gold", where the naturally white color of palladium does not require rhodium plating. Palladium, being much less dense than platinum, is similar to gold in that it can be beaten into leaf as thin as 100 nm (1 ⁄ 250,000 ...
Copernicium should be a dense metal, with a density of 14.0 g/cm 3 in the liquid state at 300 K; this is similar to the known density of mercury, which is 13.534 g/cm 3. (Solid copernicium at the same temperature should have a higher density of 14.7 g/cm 3.)