Posted by Alisha on Tuesday, February 15, 2011 at 8:42pm.
Iron can exist as either a divalent or trivalent cation. There's the Fe2+ and Fe3+ cations. The (II) refers to the valency of the Iron cation. Since it's the 2+ cation, then it's called Iron (II) Sulphide. If it was the Iron 3+ cation, for example in Iron oxide (rust) aka Fe2O3, it's called Iron (III) oxide.
Same with Copper. It exists in more than one valency. There's Copper (I) oxide (Cu2O) and Copper (II) oxide (CuO).
Related Questions
chemistry - case 1: Iron (3) sulphide contains 46.3% by mass of sulphur, and 53....
Chemistry-help - What is the chemical equation for the reaction between iron and...
10th grade Chemistry - A chemial test to distinguish between iron(Fe) and iron ...
Science - Heating Iron and Sulphure pruduces Iron Sulphide. What is the ...
science - What chemical test is there to distinguish between a sample of iron(Fe...
To DrBob222 - Now I have to name the compounds below. Please correct any of my ...
Chemistry - At high temperatures, sulfur combines with iron to form the brown-...
Chemistry - Please be specific. In an experiement 23.4 g of iron sulphide, FeS ...
chemistry - iron+sulphur together are a mixture of small grains yellow and dark ...
science - can carbon sulphide be used to physically seperate an iron sample and ...
For Further Reading
