Koper |
| Simbool | Cu |
|---|---|
| Latynse naam | Cuprum |
| Atoomgetal | 29 |
| Periode | 4 |
| Element kategorie | Oorgangselemente |
| Relatieve atomiese massa | 63.546 |
| Groep | I.B |
| Electronegativiteit | 1.9 |
| Oksidering nommers | 1, 2, 3 |
| Elektronkonfigurasie | 1s2 2s2 2p6 3s2 3p6 3d10 4s1 |
| Digtheid [g/cm3] | 8.96 |
| Staat | Vaste stof |
| Smeltpunt [°C] | 1084.5 |
| Kookpunt [°C] | 2567 |
| Atoomradius [pm] | 145 |
| Covalent radius [pm] | 138 |
| Termiese geleidingsvermoë [W m-1K-1] | 401 |
| Hitte kapasiteit [J K-1g-1] | 0.385 |
| Ontdekking | Antieke |
| Hardheid [Mohs-skaal] | 3.0 |
| Vickers se hardheid [MPa] | 369 |
| Brinell-hardheid [MPa] | 874 |
| Young's modulus [GPa] | 130 |
| Elektriese geleiding [S m-1] | 6.07 · 107 |
| Elektriese weerstandbieding [10-6Ω.m] | 0.0169 |
| Shear modulus [GPa] | 48 |
| 1ste ionisasie-energie [eV] | 7.7264 |
| 2de ionisasie-energie [eV] | 20.292 |
| 3de ionisasie-energie [eV] | 36.83 |
| Stabiele isotope | 2 |
| Onstabiele isotope | 9 |