PAPER Topics

Start of Term Paper
, symbol Pt, is a relatively rare, chemically inert metallic element that is more expensive than gold. The atomic number of is 78. is one of the transition elements in group 10 of the periodic table. is the most important of the group of e ....

Middle of Term Paper
... their word plata, meaning silver. The ore, called native platinum, usually occurs in beds of gold-bearing sand. Miners call it white gold. Native platinum contains from 60 to 85 percent pure platinum. The small, irregular grains that contain the ore also contain other rare metals, such as iridium, osmium, palladium, rhodium, and ruthenium. The grains also contain small amounts of iron, copper, chromium, and titanium. A large nugget of platinum will be found only on occasion, like in 1843, a lump weighing over 21 pounds was found in Russia. Russia produces the worlds largest share of platinum-group metals. Other important sources o ...