Copper (Cu)
Cuprum
Copper (Cu) is a transition metal in period 4, group 11. Its relative atomic mass is 63.546 and the molar mass of the atom is 63.546 g/mol.
Atomic number 29
Atomic mass 63.546
Molar mass 63.546 g/mol
Category Transition metal Solid
Properties of copper
| Atomic number | 29 |
|---|---|
| Symbol | Cu |
| Latin name | Cuprum |
| Relative atomic mass | 63.546 |
| Molar mass | 63.546 g/mol |
| Group, period, block | 11, 4, d |
| Category | Transition metal |
| State at 20 °C | Solid |
| Electron configuration | [Ar] 3d¹⁰ 4s¹ |
| Electronegativity (Pauling) | 1.9 |
| Atomic radius | 135 pm |
Electron configuration of copper
Electrons per shell
K2L8M18N1
Full notation
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s¹
Noble-gas notation
29 protons · 29 electrons[Ar] 3d¹⁰ 4s¹
Formula and compounds of copper
Simple substanceCucopperMolar mass of Cu: 63.546 g/mol
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Frequently asked questions
The relative atomic mass of copper is 63.546, so the molar mass of the atom is 63.546 g/mol.
Full: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s¹. Noble-gas notation: [Ar] 3d¹⁰ 4s¹.