Final answer:
Iron is found in compounds such as iron(II) chloride, copper(II) sulfate, and chromium(III) oxide. These compounds have various uses, such as water treatment, fungicide, and pigment.
Step-by-step explanation:
Iron is found in various compounds that have different uses. Three common compounds of iron include iron(II) chloride or ferrous chloride, copper(II) sulfate or cupric sulfate, and chromium(III) oxide or chromic oxide.
Iron(II) chloride or ferrous chloride: This compound is used in water treatment to remove impurities and purify water.
Copper(II) sulfate or cupric sulfate: This compound is used as a fungicide in agriculture and as a pigment in paints.
Chromium(III) oxide or chromic oxide: This compound is used as a green pigment in ceramics and glass.