Details : Item 215

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Alkali metals
Alkaline earth metal
Transition metals I
Transition metals II
Transition metals III
Transition metals IV
Post-transition metal
Metalloid
Diatomic non-metal
Noble gas
Other

Famille : Transition metals IV/2
Gold
Symbol: Au, phase: solid, metallic yellow.Gold is thought
to have been produced from the collision of neutron stars
It has been used for coinage, jewelry throughout history.
186,700 tonnes of gold exists above ground.
Properties
Atomic number79
Atomic weight196.966
Melting point (K)1337
Boiling point (K)3243
Speed of sound (m/s)2030
Discovery-6000 (Middle East)