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29 - Copper transition metal

Discovered by Middle East in ~9000 BC

Copper

Copper is a chemical element with symbol Cu (from Latin:cuprum) and atomic number 29. It is a soft, malleable and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a reddish-orange color.
Shell Electrons Orbitals
1 2 2 in 1s
2 8 2 in 2s + 6 in 2p
3 18 2 in 3s + 6 in 3p + 10 in 3d
4 1 1 in 4s
CopperCu Electron 1 Electron 2 Electron 1 Electron 2 Electron 3 Electron 4 Electron 5 Electron 6 Electron 7 Electron 8 Electron 1 Electron 2 Electron 3 Electron 4 Electron 5 Electron 6 Electron 7 Electron 8 Electron 9 Electron 10 Electron 11 Electron 12 Electron 13 Electron 14 Electron 15 Electron 16 Electron 17 Electron 18 Electron 1
63.55  u Atomic Mass
1.6  Å Atomic Radius
2835  K Boiling Point
1.32  Å Covalent Radius
8.96  g/cm³ Density
119.23 Electron Affinity
1.9 Electronegativity
7.73  eV First Ionization Energy
1357.75  K Melting Point
4 Number of Shells
29 Atomic Number
2, 8, 18, 1 Electron Shell Occupations