Cu

Copper

Atomic Number 29 · Metal bar/nugget

One of the first metals used by humans. Excellent electrical conductor, used in wiring, plumbing, and coinage.

Atomic Mass

63.546 u

Category

Transition Metal

Phase (STP)

Solid

Density

8.96 g/cm³

Melting Point

1084.62 °C

Boiling Point

2562 °C

Electronegativity

1.9 (Pauling)

Atomic Radius

135 pm

Electron Configuration

[Ar] 3d10 4s1

Discovered

Ancient — Known since antiquity

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Sample form: Metal bar/nugget

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