A metal that occurs rarely in nature and also has a good economic value and is additionally, not a radioactive element can be termed as a precious metal. Usually, precious metals are not as reactive as other elements and they also have higher melting points than the usual metals. In ancient days, the precious metals were used as coins for currency. The precious metals known for their high value are gold, silver, platinum and palladium.
William Hyde Wollaston first discovered the palladium precious metal, which is shiny and white like silver in appearance. The origin of its name can be traced to the asteroid Pallas. Palladium forms a group of platinum metals along with rhodium, osmium, iridium and ruthenium. They are called the platinum group, as they show the same characteristics as platinum. Palladium precious metal finds a wide variety of uses in industry today where both platinum as well as palladium are used in a number of key applications.
The precious metal platinum is a dense gray-white transition metal and is one among the rarest elements found on the earth's crust. It is usually found as ores of nickel and copper and is mostly seen in South Africa which has almost 80% of the world platinum production. It does not corrode easily even when heated to high temperatures and hence it is also termed as a noble metal. Thus, it is usually found in its native state. The precious metal platinum is usually seen in the alluvial soils of river banks and was initially used for producing artifacts.
Now, the precious metal platinum and palladium are used in catalytic converters and electrical contacts, dentistry and also as jewelry. They are both very rare metals and due to its scarcity it is highly valuable. The precious metal platinum also finds its use in electrodes, and in platinum resistance thermometer. Cisplatin, which is a compound of platinum is used in chemotherapy and is effective against certain kinds of cancer.
The precious metal platinum is a shiny, silver-white metal and is used in jewelry because it has a good resistance to wear and tear and does not tarnish easily. It has very good electrical properties as well and is therefore ideal to use in industrial applications.
William Hyde Wollaston first discovered the palladium precious metal, which is shiny and white like silver in appearance. The origin of its name can be traced to the asteroid Pallas. Palladium forms a group of platinum metals along with rhodium, osmium, iridium and ruthenium. They are called the platinum group, as they show the same characteristics as platinum. Palladium precious metal finds a wide variety of uses in industry today where both platinum as well as palladium are used in a number of key applications.
The precious metal platinum is a dense gray-white transition metal and is one among the rarest elements found on the earth's crust. It is usually found as ores of nickel and copper and is mostly seen in South Africa which has almost 80% of the world platinum production. It does not corrode easily even when heated to high temperatures and hence it is also termed as a noble metal. Thus, it is usually found in its native state. The precious metal platinum is usually seen in the alluvial soils of river banks and was initially used for producing artifacts.
Now, the precious metal platinum and palladium are used in catalytic converters and electrical contacts, dentistry and also as jewelry. They are both very rare metals and due to its scarcity it is highly valuable. The precious metal platinum also finds its use in electrodes, and in platinum resistance thermometer. Cisplatin, which is a compound of platinum is used in chemotherapy and is effective against certain kinds of cancer.
The precious metal platinum is a shiny, silver-white metal and is used in jewelry because it has a good resistance to wear and tear and does not tarnish easily. It has very good electrical properties as well and is therefore ideal to use in industrial applications.
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