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Copper (Cuprum)
Chemical Properties & Compounds
| Symbol | Atomic Number | Atomic Weight | Melting Point | Boiling Point | Phase | Density | Classification |
| Cu | 29 | 63.546 | 1084.62 °C | 2562 °C | Solid | 8.96 g/cm3 | Metal  |
|
|
|
| General |
| Name, symbol, number |
copper, Cu, 29 |
| Chemical series |
transition metals |
| Group, period, block |
11, 4, d |
| Appearance |
metallic pinkish red
 |
| 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 |
| 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 |
| Oxidation states |
2, 1
(mildly basic oxide) |
| Electronegativity |
1.90 (Pauling scale) |
Ionization energies
(more) |
1st: 745.5 kJ·mol−1 |
| 2nd: 1957.9 kJ·mol−1 |
| 3rd: 3666 kJ·mol−1 |
| Atomic radius |
135 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 |
| CAS registry number |
7440-50-8 |
| Selected isotopes |
|
|
| References |
|
Copper Compounds
|
Source: Wikipedia article Copper
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Chemistry Quick Facts
