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Element 79 - Gold (Au) sound

From the old English word geolo, or yellow; symbol Au from its Latin name aurum; prehistoric; the most malleable metal. It is used for money, jewelery, dental work, and some electronics.

Properties

Atomic Number: 79
Atomic Weight: 196.9665
Electron Configuration (at ground state): 1s22s22p63s23p63d104s24p64d104f145s25p65d106s1
Oxidation States (Bold most stable): +3, +1
Boiling Point (K): 3130
Melting Point (K): 1337.58
Density (at 300K -- g/cm3): 19.3
Atomic Volume (at 300K -- cm3/mol) 10.20
Number of stable isotopes: 1
Mass Number (Bold naturally occurring) -- Half-Life -- Disintigration Type: 195 -- 183 days -- orbital electron capture
196 -- 6.18 days -- positron emission, orbital electron capture, beta particle (electron) emission
198 -- 2.696 days -- beta particle (electron) emission
199 -- 3.15 days -- beta particle (electron) emission
Covalent Radius (Å): 1.34
Atomic Radius (Å): 1.46
First Ionization Potential (V): 9.225
Electronegativity (Pauling's): 2.54
Specific Heat Capacity (at 300K -- J g-1 K-1): 0.128
Heat of Vaporization (kJ/mol): 324.43
Heat of Fusion (kJ/mol): 12.36
Electrical Conductivity (at 293K for polycrystalline material -- 106 (ohms)-1 cm-1): 48.8
Thermal Conductivity (at 300K -- W m-1 K-1): 317
Crystal Structure: Cubic, face centered
Acid-Base Properties: Amphoteric