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Platinum
Part 1 of Paper
....ld. 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 is the metals: ruthenium,
rhodium, palladium, osmium, and iridium. Platinum metals were probably
used in alloyed forms.... Part 2 of Paper
....rge
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 of
platinum are located in the Transvaal province in South Africa and in
Sudbury, Ont. Colombia and the United States also have sources of platinum.
The United States uses about 475,000 troy ounces of platinum a year. About
1/5 of this comes from its own mines and from scrap. The res.... |
| Number of words: 640 - Approximate pages: 3 |
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