Where should we take the valency of iron 2 and where should 3?

1 Answer
anor277
Jan 27, 2018

When we assign oxidation state....

Explanation:

We gots #"ferrous ion"#, i.e. #Fe^(2+)#, versus #"ferric ion"#, i.e. #Fe^(3+)#....salts of the former include....#FeX_2#, #FeO#; salts of the latter include #FeX_3#, #Fe_2O_3#...iron has a few other accessible oxidation states, but these are much less common....

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