What is fe no3 2?

Fe(NO3)2 is the chemical formula for iron (II) nitrate. It is a salt with a white or pale green color and is soluble in water. It is commonly used in the lab as a reagent for various reactions or as a source of iron ions. Fe(NO3)2 can be prepared by reacting iron(II) sulfate with nitrate salts, such as sodium or potassium nitrate. It is also used in agriculture as a fertilizer, providing a source of iron for plants. However, it can be toxic to aquatic life and should be handled with care.