Copper has been known since prehistoric time. Ithas been being extracted from various ores for at least 7,000 years.
Name: Copper Symbol: Cu Atomic number: 29 Atomic weight: 63.546 State: solid Group, period, block: 11, 4, d Color: red-orange metallic luster Classification: transition metal Electron configuration: 4d10 4s1
Density: 8.96 g/cm-3 Melting point: 1357.77 K, 1084.62 °C, 1984.32 °F Boiling point: 2835 K, 2562 °C, 4643 °F
Oxidation states: +1, +2, +3, +4 Electronegativity: 1.90 (Pauling scale) Ionization energies: 1st: 745.5 kJ·mol-1 Covalent radius: 132±4 pm Van der Waals radius: 140 pm
There are two naturally occurring isotopes of copper exist, 63Cu, and 65Cu.