Question

Indicate the valency of Sulphur in FeS​

Answer 1

Answer:

Iron has a valency of 2+ or 3+, so there are two iron sulfide molecules: FeS and Fe2S3. The first one is called ferrous sulfide and the other one is ferric sulfide. The sulfide ion has a valency of 2-, so the valency of iron in FeS is 2+. In general, when you hear the word “ferrous” it means that the iron atom has a valency of 2+ and “ferric” means that the iron atom has a valency of 3+. This also applies to other metals like copper.

Answer 2

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The valency of Sulphur is anyhow 2 here since we know that Fe also have 2 valency it meanrects it can combine with 2 e of Sulphur.