Copper
Transition Metal
Copper (Cu) is a chemical element with atomic number 29, classified as a transition metal. At room temperature it is a solid. It has been known since ancient times.
Properties
- Atomic number
- 29
- Atomic mass
- 63.546 u
- Category
- Transition Metal
- Group
- 11
- Period
- 4
- Block
- d-block
- Electron configuration
- [Ar] 3d¹⁰ 4s¹
- Phase at STP
- Solid
- Density
- 8.96 g/cm³
- Melting point
- 1357.77 K (1084.6 °C)
- Boiling point
- 2835 K (2561.8 °C)
- Electronegativity
- 1.9
- Atomic radius
- 145 pm
- Ionization energy
- 7.726 eV
- Discovery
- Known since ancient times
Common uses
Electrical wiring, plumbing, coins, antimicrobial surfaces
Did you know?
Excellent conductor and naturally antimicrobial - kills bacteria on contact.
Compounds you can make with copper
Copper appears in 2 compounds in our periodic table sandbox. Each one is a real substance with its true chemical formula — combine the right elements in the right ratio below to discover it.
-
CuO
Copper(II) Oxide
A black solid used in pigments and as a catalyst.
-
CuSO4
Copper(II) Sulfate (Blue Vitriol)
A brilliant blue salt used as a fungicide, algaecide, and in electroplating.