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Copper is a chemical element; it has symbol Cu (from Latin cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of…
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Copper | (at STP) | 8,944 g/L | 1.00 | infobox |
| Copper | 63Cu | 69.2% | 1.00 | infobox |
| Copper | 64Cu | synth | 1.00 | infobox |
| Copper | 65Cu | 30.9% | 1.00 | infobox |
| Copper | 67Cu | synth | 1.00 | infobox |
| Copper | Appearance | Red-orange metallic luster | 1.00 | infobox |
| Copper | at T (K) | 1509 | 1.00 | infobox |
| Copper | Atomic number (Z) | 29 | 1.00 | infobox |
| Copper | Atomic radius | empirical: 128 pm | 1.00 | infobox |
| Copper | Block | d-block | 1.00 | infobox |
| Copper | Boiling point | 2835 K (2562 °C, 4643 °F) | 1.00 | infobox |
| Copper | Brinell hardness | 235–878 MPa | 1.00 | infobox |
| Copper | Bulk modulus | 140 GPa | 1.00 | infobox |
| Copper | CAS Number | 7440-50-8 | 1.00 | infobox |
| Copper | Covalent radius | 132±4 pm | 1.00 | infobox |
| Copper | Crystal structure | face-centered cubic (fcc) (cF4) | 1.00 | infobox |
| Copper | Density (at 20° C) | 8.935 g/cm3 | 1.00 | infobox |
| Copper | Discovery | Middle East (9000 BC) | 1.00 | infobox |
| Copper | Electrical resistivity | 16.78 nΩ⋅m (at 20 °C) | 1.00 | infobox |
| Copper | Electron configuration | [Ar] 3d10 4s1 | 1.00 | infobox |
| Copper | Electronegativity | Pauling scale: 1.90 | 1.00 | infobox |
| Copper | Electrons per shell | 2, 8, 18, 1 | 1.00 | infobox |
| Copper | Group | group 11 | 1.00 | infobox |
| Copper | Heat of fusion | 13.26 kJ/mol | 1.00 | infobox |
| Copper | Heat of vaporization | 300.4 kJ/mol | 1.00 | infobox |
| Copper | Ionization energies | 1st: 745.5 kJ/mol | 1.00 | infobox |
| Copper | Ionization energies | 2nd: 1957.9 kJ/mol | 1.00 | infobox |
| Copper | Ionization energies | 3rd: 3555 kJ/mol | 1.00 | infobox |
| Copper | Ionization energies | (more) | 1.00 | infobox |
| Copper | Lattice constant | a = 361.50 pm (at 20 °C) | 1.00 | infobox |
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