Iron compounds can have 2 different formulas. What is the formulas of the other iron II compounds?For eg, another formula for iron chloride is FeCl2. This is often called iron II in order to...

Iron compounds can have 2 different formulas. What is the formulas of the other iron II compounds?

For eg, another formula for iron chloride is FeCl2. This is often called iron II in order to distinguish it from the iron III chloride.

Expert Answers
nessus eNotes educator| Certified Educator

Iron (l l) compounds (called iron 2 in the modern IUPAC system) have a valency of 2+. Examples: FeSO4, FeCo3, Fe(NO3)2, FeBr2.

Iron 3: Fe2(SO4)3, Fe2(CO3)3, Fe(NO3)3, FeBr3.

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