A) \[\frac{3}{2}\]
B) \[\frac{4}{5}\]
C) \[\frac{5}{4}\]
D) \[\frac{8}{3}\]
Correct Answer: D
Solution :
Oxidation state of Fe in \[F{{e}_{3}}{{O}_{4}}\] is: \[\overset{x}{\mathop{F}}\,{{e}_{3}}{{\overset{-2}{\mathop{O}}\,}_{4}}\] \[3x+(-2\times 4)=0\] 3x = +8 \[x=+\frac{8}{3}\]
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