NO. 029Transition

Cu

Copper

Copper is an excellent conductor of electricity and heat, widely used in electrical wiring and plumbing.

Crystal Structure

Face-centered cubic (fcc)

Atomic Mass63.55 u

Density8.96 g/cm³

Melting Point1357 K

Boiling Point2835 K

Atomic Radius128 pm

Electronegativity1.9

Ionization Energy745 kJ/mol

Electron Affinity119 kJ/mol

Bonding TypeMetallic

Oxidation States1, 2

Acid/BaseBasic

ReactivityLow

Electron Configuration

[Ar] 3d10 4s1

Discovered ByAncient civilizations

Year-9000

Known Isotopes

Cu-63Cu-65