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Copper

Chemical element
Copper is a chemical element; it has symbol Cu 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 pinkish-orange color. Wikipedia
Symbol: Cu
Density: 8.96 g/cm³ (Near room temperature)
Melting point: 1,984°F (1,085°C)
Atomic mass: 63.546 u
Atomic number: 29
Electron configuration: [Ar] 3d¹⁰ 4s¹
Green stuff: copper oxide