Copper (Cu) » Innovachem

Isotope	Z(p)	N(n)	Atomic Mass	Natural Abundance	Enrichment Level	Chemical Form
Cu-63	29	34	62.929601	69.17%	99.90%	Metal
Cu-63	29	34	62.929601	69.17%	99.90%	Oxide
Cu-65	29	36	64.927794	30.83%	89.70-99.00%	Metal
Cu-65	29	36	64.927794	30.83%	89.70-99.00%	Oxide

Name	Copper
Symbol	Cu
Atomic number	29
Atomic weight	63.546
Standard state	Solid at 298 °K
CAS Registry ID	7440-50-8
Group in periodic table	11
Group name	Coinage metal
Period in periodic table	4
Block in periodic table	d-block
Color	Copper, metallic
Classification	Metallic
Melting point	1083.4 °C
Boiling point	2567 °C
Thermal conductivity	401 W/(m·K) at 298.2 °K
Electrical resistivity	1.678 µΩ·cm at 20 °C
Electronegativity	1.9
Specific heat	0.386 c in J/g·K at 20 °C
Heat of vaporization	300 kJ·mol^-1
Heat of fusion	13.1 kJ·mol^-1
Density of solid	8.92 g/cm³
Electron configuration	[Ar]3d¹⁰4s¹ (electron configuration of Cu⁺ [Ar]3d¹⁰ and Cu²⁺ [Ar]3d⁹)
Oxidation states	+1 or +2