Platinum
(Platinum) chemical element, or what is known among some people as "white gold" is a precious metal for the color gray - white, The origin of the word platinum to the Spanish word, namely, (Plata) and means (silver small), and platinum is stronger than iron and has a flexible gold. Has the symbol Pt in the periodic table and atomic number 78 and atomic weight of 195.09 and last orbit 5d9 1768.3C and the degree of melting and boiling point 3825C. Date Platinum is the rarest and most precious metals in the world. Was discovered for the first time in the year 1557, so by the Italian Julius Skelijr, and in 1750 was the discovery of large quantities of metal platinum, and that when he found the Spanish deposits of crude platinum in Latin America but it was cheap because people know its value, but began its value in the Height when spread and became the world aware of and familiar with Bastkhaddamath and its benefits. There is no platinum in nature alone, but there are mixed with five other metals are palladium, osmium, iridium, ruthenium, and rhodium, in different proportions and called on the name of these six metals community name platinum group metals. In some cases, are found on blocks of natural platinum, in the year 1843 found in Russia on a mass weighing 9.5 kg of natural platinum. Platinum Properties Platinum metal strong stainless steel does not lose its luster when exposed to air, because platinum does not react with oxygen or sulfur compounds in the air, as it is not affected by acids that melt most other metals. The best way to melt platinum is to use a mixture of nitric acid and hydrochloric acid, and easily combine with phosphorus, arsenic, silicon, and also a platinum alloy with most metals. Uses of platinum Platinum is used in chemical laboratories to melt the samples of various acids, because it resists heat and corrosion, and also uses platinum in the work of panels and thin wires that are used in a variety of purposes. Also works platinum to dismantle parts of the oil, and enters in the jewelry industry in a wide range because of its strength and hardness, in addition to the non-affected material de-gloss, and uses platinum in the manufacture of the best surgical instruments, and laboratory instruments, and dental, are also used some of the vehicles chemical container for the platinum in the treatment of certain forms of cancer such as platinum compound Cisse (cis platinum).
ليست هناك تعليقات:
إرسال تعليق