Answer: Answers of those students who wrote Zn are correct
Explanation: Zinc is a chemical element with Zn symbol and according to the periodic table, the atomic number 30. Zinc is one of the elements most abundant in the Earth's crust, and to a certain extent it is a brittle metal. Zinc was discovered and used in the third millennium BC, although it has not been widely used until the twelfth century in India.
Today, zinc is used as an anti-corrosion agent for metal galvanizing. In addition, it is used for batteries as well as for the production of brass alloys, together with copper.
Zinc is a very important mineral for human health. Lack of zinc causes various diseases, especially in underdeveloped countries. It is important in the diet of pregnant women due to prenatal development.