1. 29
Cu
cobre – cooper
Mass: 63,536 u
[Ar] 3d10
4s1
Melting point: 1357,77 K
Boiling point: 3200 K
Density: 8,96 g/cm3
Discovery: middle easterns
It is a ductile metal with very high thermal and electrical conductivity.
Pure copper is soft and malleable; a freshly exposed surface has a
reddish-orange color. It is used as a conductor of heat and electricity, a
building material, and a constituent of various metal alloys.