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Question

Iron (Roman II) oxide  what do you mean by (II) 

 


Solution

Like many elements, iron (chemical symbol Fe) can exist in more than one chemical form, or "oxidation state." The two most common forms for iron are Fe(II), in which the iron ion shares two of its electrons, and Fe(III), in which it shares three electrons.

Fe(II) means that the oxidation state of the iron is +2.

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