Zinc is a chemical element. Its chemical symbol is Zn, and its atomic number is 30. It is located in the 4th period and group IIB in the periodic table of chemical elements. Zinc is a light gray transition metal and the fourth "common" metal. In modern industry, zinc is irreplaceable in battery manufacturing and is a very important metal. In addition, zinc is also one of the essential trace elements for the human body and plays an extremely important role.