Relative atomic mass: 63.546 +- 0.003

English: Copper
French: Cuivre
Croatian: Bakar
German: Kupfer
Italian: Rame
Spanish: Cobre

Atomic number: 29
Group numbers: 11
Period: 4
Standard state (20 oC): solid

Discovery: - -
Copper has been known since ancient times. The origin of the name comes from the Latin word cuprum meaning the island of Cyprus famed for its copper mines. It is a malleable, ductile, reddish-brown metal, resistant to air and water. Exposed surfaces form greenish carbonate film. Pure copper occurs rarely in nature. It is usually found in sulfides as in chalcopyrite (CuFeS2), coveline (CuS), chalcosine (Cu2S) or oxides like cuprite (Cu2O). Copper is most often used as an electrical conductor and in the manufacture of water pipes. Its alloys are used in jewellery and for coins. The price of 99.9 % pure copper shot is 26.10 for 500 g.
Electronic configuration: [Ar] 3d10 4s1
Formal oxidation number: +1 +2
Atomic radius: 127.8 pm

Electronegativities: 1.9
Thermal conductivity: 401 W/(m K)
Electrical resistivity (20 oC): 1.673 microOhm cm

Melting point: 1084.62 oC
Boiling point: 2562 oC

Heat of fusion: 13 kJ/mol
Heat of vaporization: 306.7 kJ/mol
Heat of atomization: 337.15 kJ/mol

28Ni <= 29Cu => 30Zn

ASCII Periodic Table of the Elements
29 Aug. 2017
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