platinum

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 originates from Spanish platina, a diminutive of plata "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 5 μg/kg. 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 a major precious metal commodity.Platinum is one of the least reactive metals. It has remarkable resistance to corrosion, even at high temperatures, and is therefore considered a noble metal. Consequently, platinum is often found chemically uncombined as native platinum. Because it occurs naturally in the alluvial sands of various rivers, it was first used by pre-Columbian South American natives to produce artifacts. It was referenced in European writings as early as the 16th century, but it was not until Antonio de Ulloa published a report on a new metal of Colombian origin in 1748 that it began to be investigated by scientists.
Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewelry. Platinum is used in the glass industry to manipulate molten glass which does not "wet" platinum. As 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.Pure platinum is less expensive than pure gold, having been so continuously since 2015. In early 2021, the value of platinum ranged from US$1,055 to US$1,320 per troy ounce.

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  1. Y

    Help Pano mag rip ng Platinum CD?

    Pwd magtanong kung pano mag copy ng cd ni Platinum Reyna 3 Vol 93? para po mashare ko naman may New CD kasi ako, gusto ko sana Mashare. Salamat
  2. J

    Help PLATINUM KARAOKE REYNA 3

    Platinum Karaoke Reyna 3 Volume 90-92
  3. C

    Help Platinum FW Upgrade

    Mga lods tanong lang, pwede kaya direct iupgrade sa pinakalatest na firmware yung platinum reyna 3c sya, simula nung binili to hindi pa naupgrade yung firmware nya, 2017 pa nakainstalled, wala kayang magiging problema? O kailangan isa-isahin yung upgrade nya?
  4. A

    QUESTION: Platinum Karaoke T/X/BMB Volume 93 ISO

    Hello mga lodi. Kailan po kaya magkakaroon ng ISO po ni Platinum TXBMB for Volume 93. Salamat po.
  5. X

    Help! konzert amplifier

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  6. I

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  7. P

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