A) \[FeS\]
B) \[Fe{{S}_{2}}\]
C) \[NaO-\underset{\begin{smallmatrix} | \\ ONa \end{smallmatrix}}{\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{S}}}\,=O\]
D) \[\underset{\begin{smallmatrix} | \\ ONa \end{smallmatrix}}{\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{S}}}\,-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{S}}\,-ONa\]
Correct Answer: B
Solution :
The oxidation number of sulphur is -l in\[Fe{{S}_{2}}\]as: \[+2+2x=0\] \[2x=-2\] \[x=-1\]
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