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Element 29 - Copper (Cu) sound

From cuprum, derived from the acient name for Cyrus, famed for its copper mines; known by early man. It and gold are the only two colored metals. Alloyed in most gold jewellery and silverware, copper is mixed with zinc in brass, with tin in bronze. A "copper" penny is bronze.

Properties

Atomic Number: 29
Atomic Weight: 63.546
Electron Configuration (at ground state): 1s22s22p63s23p63d104s1
Oxidation States (Bold most stable): +1, +2
Boiling Point (K): 2840
Melting Point (K): 1356.6
Density (at 300K -- g/cm3): 8.96
Atomic Volume (at 300K -- cm3/mol) 7.10
Number of stable isotopes: 2
Mass Number (Bold naturally occurring) -- Half-Life -- Disintigration Type: 64 -- 12.70 hours -- beta particle (electron) emission
, positron emission, orbital electron capture
67 -- 61.88 hours -- beta particle (electron) emission
Covalent Radius (Å): 1.17
Atomic Radius (Å): 1.28
First Ionization Potential (V): 7.726
Electronegativity (Pauling's): 1.90
Specific Heat Capacity (at 300K -- J g-1 K-1): 0.385
Heat of Vaporization (kJ/mol): 300.5
Heat of Fusion (kJ/mol): 13.14
Electrical Conductivity (at 293K for polycrystalline material -- 106 (ohms)-1 cm-1): 60.7
Thermal Conductivity (at 300K -- W m-1 K-1): 401
Crystal Structure: Cubic, face centered
Acid-Base Properties: Very basic