In which of the following iron compounds, the compound is non-stoichio

1.	In which of the following iron compounds, the compound is non-stoichiometric?
A.	Fe<sup>2+</sup> and Fe<sup>3+</sup>
B.	Fe<sup>2+</sup> ion only
C.	Fe<sup>3+</sup> ion only
D.	It doesn‚Äö√Ñ√∂‚àö√ë‚àö¬•t depend on the iron ions
Answer» B. Fe<sup>2+</sup> ion only

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