Atomic Properties
- Atomic Number
- 29
- Atomic Mass
- 63.5460 u
- Electron Configuration
- [Ar] 3d10 4s1
- Electronegativity
- 1.90
- Block
- d-block
- Group
- 11
- Period
- 4
Physical Properties
- Phase (STP)
- solid
- Melting Point
- 1357.77 K
- Boiling Point
- 2835.00 K
- Density
- 8.9600 g/cm³
About Copper
Excellent conductor; used since ancient times; essential trace element.
Why "Cu" for Copper?
Cu←Cuprum(Latin)
The symbol Cu comes from "Cuprum," Latin for copper, derived from "Cyprium aes" meaning "metal from Cyprus," where copper was extensively mined in ancient times.
Isotopes of Copper
Copper has 2 naturally occurring isotopes.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 63Cu | 63 | 62.92959772 | 69.15% | Stable |
| 65Cu | 65 | 64.9277897 | 30.85% | Stable |
Data source: NIH PubChem (aggregated from IUPAC, NIST)