Copper
Copper is a chemical element with the symbol Cu (from Latin cuprum) and atomic number 29 (29 protons and 29 electrons) and atomic mass 63.6 u. At room temperature, the copper is in solid form. Classified as a transition metal, it is one of the most important metals industrially, reddish, ductile, malleable, good conductor of electricity. Copper is currently used for the production of electrically conductive materials (wire and cable) and alloys such as brass and bronze.