_files/cu.jpeg){kind=small}
Basic Information
Name: Copper
Symbol: Cu
Atomic Number: 29
Atomic Mass: 63.546 amu
Melting Point: 1083.0 °C (1356.15 °K, 1981.4 °F)
Boiling Point: 2567.0 °C (2840.15 °K, 4652.6 °F)
Number of Protons/Electrons: 29
Number of Neutrons: 35
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 8.96 g/cm3
Color: red/orange
Atomic Structure
![[Bohr Model of Copper]](Chemical Elements_com - Copper (Cu)_files/b0029.gif) |
Number of Energy Levels: 4 First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 18 Fourth Energy Level: 1 |
Isotopes
| Isotope | Half Life |
| Cu-61 | 3.4 hours |
| Cu-62 | 9.7 minutes |
| Cu-63 | Stable |
| Cu-64 | 12.7 hours |
| Cu-65 | Stable |
| Cu-67 | 2.6 days |
Facts
Date of Discovery: Known to the ancients
Discoverer: Unknown
Name Origin: From the Latin word cyprium, after the island of Cyprus
Uses: electrical conductor, jewelry, coins, plumbing
Obtained From: chalcopyrite, coveline, chalcosine