Zinc

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Zinc
Name Zinc
Symbol Zn
Atomic number 30
Atomic mass 65.4 amu
Crystal structure Hexagonal
Color Bluish gray
Date of discovery 1746
Name of discoverer Andreas Marggraf
Name origin From the German word zinke (meaning jagged or tooth-like)
Uses Metal coating, rust protection (galvanization), brass
Obtained from Zinc blende, calamine

Zinc is one of the oldest metals known to mankind.[1] It is a chemical element with the symbol Zn and atomic number 30. In some historical and sculptural contexts, it is (or was) known as spelter. It is a transition metal.

Zinc is most commonly used to galvanize other metals or alloys to make them corrosion resistant. It is also a main constituent of many coins. Zinc also is a trace element essential to life.

Zinc lozenges have been claimed to lessen the duration of the common cold, but

As with more traditional over-the-counter medications, evidence that these products help reduce the duration of colds or lessen symptoms is mostly subjective, says Linda Lambert, cold and flu program director at the National Institute of Allergy and Infectious Disease.[2]

Small pieces of zinc can burn with a blue flame.

Zinc burning

Notes

  1. [ Zinc, Wide Usage of a Modest Metal: One of the Earliest Metals to have Appeared in Human History]
  2. Zinc may lessen length, severity of cold
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