Zinc
buy a boat load of vitamin zinc
ZN is zinc's main symbol
zinc has an atomic number of 30 and is arranged in group 10 period 4
zinc vitamen
Zinc is included in most single tablet over-the-counter daily vitamin and mineral. zinc is believed to have antioxidant which protect against acing skin and muscle and it also help speed up healing process after injuries.
zinc compound
zinc compound are rare zinc compounds contains formally the (Zn2)2+ core. zinc metal had only been obtained by as a yellow glass formed by cooling a solution of metallic zinc in molten lava.
zinc found in specific places
china produces in 2010 for zinc was 3.5 million tone. zinc is the 4 most common metal in use. 70% of the world's zinc originates from mining, while the remaining 30% comes from recycling secondary zinc.
history
Andreas Sigismund Marggraf
Marggraf was the one who discovered pure zinc while he was doing an experiment when he heated a mixture of calamine and charcoal in a closed vessel without copper to obtain a metal. This procedure became commercially practical in 1752.
late roman brass bucket
the roman began making brass items that where 70-80% zinc with lead, iron, antimony, and other metals making up the rest.
Luigi Galvani
patented a process in 1758 for calcining zinc sulfide into an oxide usable in the retort process. Prior to this, only calamine could be used to produce zinc.
zinc's biological importance
Zinc is an essential trace element for humans and other animals, for plants and for microorganism like for example it helps reads the DNA sequences in the cell. zinc is the second most general transition metal in organisms after iron.