Write about Platinum atom.

     

Platinum is a chemical element with the symbol Pt and atomic number 78.  It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal.  Its name is derived from the S[anish term platino, meaning "little silver".

     Platinum is a member of the platinum group of elements and group 10 of the periodic table of elements.  It has six naturally occurring isotopes.  It is one of the rarer elements in Earth's crust, with an average abundance of approximately 5KG.  It occurs in some nickel and copper ores along with some native deposits, mostly in South Africa, which accounts for 80% of the world production.  Because of its scarcity in Earth's crust, only a few hundred tonnes are produced annually, and given its important uses, it is highly valuable and is major percious metal commodity.

     Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewerly.  Being a heavy metal, it leads to health problems upon exposure to its salts;  but due to its corrosion resistance, metallic platinum has not been linked to adverse health effects.  Compounds containing platinum, such as cisplatin, oxaliplatin and carboplatin, are applied in chemotherapy against certain types of cancer.