Copper
Symbol: Cu (Cuprum)
At. No.: 29
At mass: 635
Electronic Configuration : [Ar] 4s1 3d10
Occurrence
Copper occurs in both native state and combined state. The chief ores of copper are :
· Copper pyrite or chalcopyrite CuFeS2
· Copper glanece Cu2S
· Cuprite or ruby copper Cu2U
· Malachite CuCo3 Cu (OH)2
· Azurite 2CuCo3 Cu(OH)2