Iron oxidation state.

Iron Fe, has an atomic mass of 56, serial number 26, is included in group 8.

Most often, iron is found in a bivalent and trivalent state. Example.

FeO – bivalent iron.

Fe2O3 – tri-valent iron.

But also known compounds of iron 6 – and 7 – valence.

K2FeO4 – iron 6 – valence.

Anion [FeO4] – 7 – valence iron.



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