Gold Periodic Table (original) (raw)

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Gold (Au), chemical element, the yellow precious metal of Group 11 or 1B, and period 6 of the periodic table uses widely from ancient history in jewelry or coinage production. The name gold is derived from the old English word geolu means yellow and from the Latin word aurum. Copper, silver, and gold constitute the family of the coinage of currency metals and occurs in nature in a native form with very similar chemical and physical properties in chemistry. The chemically unreactive, extremely malleable, ductile, high density (19.32 gm cm), attractive golden-yellow color, and bright metal gold found in nature's very pure form. The purity of metal expressed in carats, pure gold is 24 carat and common alloyed form with copper is 22 carat. The good conductor of specific heat and electricity gold has the chemical symbol Au, atomic number 79, atomic weight 196.967, melting point 1064 °C, boiling point 2808°C , valence shell electron configuration [Kr] 4f 5d 6s , and common oxidation number state +3. The metal from fcc crystal lattice in the solid form is known for its characteristic color. In learning chemistry, the characteristic golden yellow color of gold arises from the absorption in the UV and blue regions of the electromagnetic spectrum corresponding to the excitation of electrons from filled d-band to s-p conduction band.-3