Template:Infobox copper

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29 nickel ← copper → zinc - ↑ Cu ↓ Ag Periodic table - Extended periodic table
General
Name, symbol, number	copper, Cu, 29
Chemical series	transition metals
Group, period, block	11, 4, d
Appearance	metallic bronze
Standard atomic weight	63.546(3) g·mol−1
Electron configuration	[Ar] 3d10 4s1
Electrons per shell	2, 8, 18, 1
Physical properties
Phase	solid
Density (near r.t.)	8.96 g·cm−3
Liquid density at m.p.	8.02 g·cm−3
Melting point	1357.77 K (1084.62 °C, 1984.32 °F)
Boiling point	2835 K (2562 °C, 4643 °F)
Heat of fusion	13.26 kJ·mol−1
Heat of vaporization	300.4 kJ·mol−1
Specific heat capacity	(25 °C) 24.440 J·mol−1·K−1
Vapor pressure P/Pa 1 10 100 1 k 10 k 100 k at T/K 1509 1661 1850 2089 2404 2836
Atomic properties
Crystal structure	face centered cubic 0.3610 nm
Oxidation states	+1, +2, +3, +4 (mildly basic oxide)
Electronegativity	1.90 (Pauling scale)
Ionization energies (more)	1st: 745.5 kJ·mol−1
	2nd: 1957.9 kJ·mol−1
	3rd: 3555 kJ·mol−1
Atomic radius	128 pm
Atomic radius (calc.)	145 pm
Covalent radius	138 pm
Van der Waals radius	140 pm
Miscellaneous
Magnetic ordering	diamagnetic
Electrical resistivity	(20 °C) 16.78 nΩ·m
Thermal conductivity	(300 K) 401 W·m−1·K−1
Thermal expansion	(25 °C) 16.5 µm·m−1·K−1
Speed of sound (thin rod)	(r.t.) (annealed) 3810 m·s−1
Young's modulus	110 - 128 GPa
Shear modulus	48 GPa
Bulk modulus	140 GPa
Poisson ratio	0.34
Mohs hardness	3.0
Vickers hardness	369 MPa
Brinell hardness	874 MPa
CAS registry number	7440-50-8
Selected isotopes
Main article: Isotopes of copper iso NA half-life DM DE (MeV) DP 63Cu 69.15% 63Cu is stable with 34 neutrons 65Cu 30.85% 65Cu is stable with 36 neutrons
References
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