Occurrence and principles of extraction of zinc:Atomic mass: 65.37 Valence: 2Atomic number: 30 Symbol: ZnLocation in the periodic table: Period Number -4, Group Number -12.The ancient employed an alloy of Zn and Cu not very dissimilar from brass without recognizing its actual composition. Zinc has been well-known in many countries for a long time.Occurrence:
Zinc does not take place in the native form since it is a reactive metal. Though, in the combined state, zinc is broadly distributed.Ores:
The significant ores of zinc are
1) Zinc blende, ZnS2) Calamine, ZnCO33) Zincite, ZnO
The main ore of Zinc is Zinc blende. Uses of zinc:
1. It is broadly utilized for galvanizing iron sheets.2. It is utilized in the extraction of gold and silver by the cyanide procedure.3. Zinc plates and rods are utilized in batteries and dry cells.4. Zinc dust and granulated zinc are employed in laboratory as reducing agents.
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Excellent dielectric strength, Very low dissipation factor, Remaining reasonably constant at high frequencies or within humid conditions. No mechanical or chemical stripping needed
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