the chemical formula of ferrous sulfate is "FeSO4".

this compound consists of iron ion (Fe2+) and sulfate ion (SO42-). In ferrous sulfate, the valence of iron is +2, while that of sulfate radical is -2. Therefore, the chemical formula of ferrous sulfate can be expressed as FeSO4.

ferrous sulfate is an inorganic compound, which is widely used in industry, agriculture and medicine. In industry, ferrous sulfate can be used to make intermediates of dyes, pigments and other chemicals. In agriculture, ferrous sulfate can be used as iron fertilizer to supplement iron in soil and promote plant growth. In medicine, ferrous sulfate can be used to treat anemia and other diseases.

the properties of ferrous sulfate are similar to sulfate, and it can react with alkali, metal oxides and so on to generate corresponding precipitates and gases. In addition, ferrous sulfate is reducible and can be oxidized to ferric sulfate (Fe2(SO4)3).

there are many methods to prepare ferrous sulfate, which can be obtained by reacting iron filings with dilute sulfuric acid, reacting iron oxide with dilute sulfuric acid or electrolyzing ferric sulfate solution.

Among them, reacting iron filings with dilute sulfuric acid is the most commonly used preparation method. Specifically, iron filings are added into dilute sulfuric acid, and after heating and stirring for a certain period of time, ferrous sulfate solution can be obtained after the reaction is complete.

generally speaking, ferrous sulfate is an important inorganic compound, which has a wide range of applications and important significance. By understanding the chemical formula and properties of ferrous sulfate, we can better understand and utilize this compound and promote its development and application in various fields.

in addition, the understanding of chemical formulas and compounds is also one of the important foundations of learning chemistry. By learning and mastering the basic rules and skills of chemical formula, we can better understand the nature and laws of chemical reactions and improve our chemical literacy and comprehensive ability.

At the same time, we can learn more about the knowledge and trends in the field of chemistry by expanding our knowledge, and constantly expand our knowledge horizons and ways of thinking.