A) \[F{{e}_{2}}C{{O}_{3}}\]
B) \[F{{e}_{2}}{{O}_{3}}\]
C) \[F{{e}_{3}}{{O}_{4}}\]
D) \[~F{{e}_{2}}{{O}_{3}}-3{{H}_{2}}O\]
Correct Answer: C
Solution :
\[\text{F}{{\text{e}}_{\text{3}}}{{\text{O}}_{\text{4}}}\] (lead stone or magnetic oxide of iron) is magnetite.
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