29Cu63.546
Copper
Transition metal · element 29 · group 11, period 4
Quick facts
| Symbol | Cu |
|---|---|
| Atomic number | 29 |
| Relative atomic mass | 63.546 |
| Category | Transition metal |
| Position | group 11, period 4 |
| State at 20 °C | Solid |
| Melting point | 1,084.6 °C |
| Boiling point | 2,562 °C |
| Density | 8.96 g/cm³ |
| Electronegativity | 1.9 |
| Electron configuration | [Ar] 3d10 4s1 |
About Copper
Copper has the symbol Cu and atomic number 29, which means every copper atom has 29 protons in its nucleus and, in a neutral atom, 29 electrons. At room temperature it is a solid.
Transition metals sit in the middle block of the periodic table. They are usually hard, dense and strong, often form coloured compounds, can have more than one ion charge, and many are useful catalysts.
It melts at 1,084.6 °C and boils at 2,562 °C.
Explore it
See where copper sits, and drag the temperature slider to watch it melt and boil, on the interactive periodic table. Practise with quizzes on OmniEx.