Cu

Copper · element 29

Transition Metal · Solid at room temperature

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.

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Macro of Native Copper about 1 ½ inches (4 cm) in size
Macro of Native Copper about 1 ½ inches (4 cm) in size - Native_Copper_Macro_Digon3.jpg: 'Jonathan Zander (Digon3)' derivative work: Materialscientist, CC BY-SA 2.5 <https://creativecommons.org/licenses/by-sa/2.5>, via Wikimedia Commons

Key facts

Atomic mass
63.5463 u
how heavy one atom is
Phase (room temp.)
Solid
Density
8.96 g/cm³
how tightly packed it is
Melting point
1357.77 K (1085 °C)
when solid turns to liquid
Boiling point
2835 K (2562 °C)
when liquid turns to gas
Period
4
its row in the periodic table
Group
11
its column in the periodic table
Block
D-block
the neighbourhood it lives in
Electronegativity
1.9
how strongly it pulls electrons
Electron configuration
[Ar] 3d10 4s1
where its electrons live
Shells
2 · 8 · 18 · 1
electrons in each layer, inside to out
Discovered by
Middle East
who found it
Appearance
red-orange metallic luster
what it looks like

Source: Wikipedia

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