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Platinum
Beginning of essay
, 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 elements called the
metals, also included in this group ....
Middle of essay
....troy ounces of platinum a year. About
1/5 of this comes from its own mines and from scrap. The rest is imported
largely from Canada, which recovers large quantities as a byproduct of the
nickel industry. In the United States, platinum is found in the gold
deposits in California, Nevada, and Oregon. Large amounts also come from
the process of refining gold and copper.
Platinum is a silverish metal with a hardness of 4.3. It has a high fusing
point, is malleable and ductile, it doesn't expan.... |
| Number of words: 640 |
Approximate pages: 3 |
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