29Cu
Copper
구리 · 銅
Transition metal
Atomic number29
ElementCu — Copper
Atomic mass63.546
CategoryTransition metal
Group11
Period4
Electron config[Ar] 3d10 4s1
Shells2,8,18,1
State (RT)Solid
Melting pt1085°C
Boiling pt2562°C
Electronegativity1.9
DiscoveredAncient
Main usesWiring, plumbing, electronics
2 · 8 · 18 · 1