What is the valency of iron in the products formed(a) When iron is exposed to humid air for a long time?(b)When red hot iron is made to react with steam?

What is the valency of iron in the products formed(a) When iron is exp

1.	What is the valency of iron in the products formed(a) When iron is exposed to humid air for a long time?(b)When red hot iron is made to react with steam?
Answer» Solution :(a) When Fe is EXPOSED to humid air for a long period of TIME , it gets rusted. `"Rust""" :""Fe_(2)O_(3).xxH_(2)O` Valency of Fe is '3' `3Fe+underset("steam")(4H_(2)O)tounderset(("ferrose ferric oxide"))(Fe_(3)O_(4)+4H_(2))` `(Fe_(3)O_(4)` is a MIXED oxide that is `FeO+Fe_(2)O_(3))` (Valency of IRON in `Fe_(3)O_(4) ` is 2 aswell 3)