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Platinum
Beginning of 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 elements called the
metals, also included in this group is the metals: ruthenium,
rhodium, pall .... Middle of paper .... 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 of
platinum are located in the Transvaal province in South Africa and in
Sudbury, Ont. Colombia and the United States also have sources ....
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Number of words: 640 Number of pages: 3 (approx. 250 words per double-spaced page)
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