The South American Indians knew platinum from an early age, and it is often found in sand grains in the form of natural platinum in nature. When the Spaniards arrived in South America, they called the natural platinum “Little silver” and brought it to Europe for the first time from Ulloa. The “Litter Silver” is […]
The platinum-group metals can be described as refractory metals because of their high melting points. This group comprises platinum, osmium, iridium, ruthenium, rhodium and palladium, i. e., metals which have properties similar to those of platinum. The metals in this group are quite scarce and, hence, can be considered only for very specialized applications even […]
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