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  Occurrence and principles of extraction of copper

Occurrence and principles of extraction of copper:

Atomic mass: 63.54                  Valency: 1 and 2
Atomic number: 29                   Symbol: Cu

Location in the periodic table: Period Number - 4, Group Number -11.

Occurrence:

Copper was recognized to the earliest races of mankind. It was termed as cuprum by the Romans since they utilized to obtain it from the island of Cyprus. Copper is found in the native state and also in the combined state. Native copper is found in big amounts in Michigan (i.e., USA).

Ores:

i) Copper pyrite, CuFeS2.
ii) Ruby copper or Cuprite, Cu2O.
iii) Copper glance, Cu2S.

The main ore of copper is copper pyrite. It outcomes nearly 76 percent of the world production of copper.

Uses:

1. It is broadly utilized for making electric cables and other electric machines.
2. It is utilized for making containers, utensils, calorimeters, coins, and so on.
3. It is utilized in electroplating.
4. It is alloyed with gold and silver for the manufacture of coins and jewellery.

Alloys of Copper:

1345_Alloys of copper.jpg

 

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