1.

In which of the following compounds, the oxidation number of the started transition metal is zero.A. `[Fe(H_(2)O)_(3)](OH_(2))`B. `[Co(NH_(3))_(6)]Cl_(2)`C. `[Ni(CO_(4))]`D. `[Pt(C_(2)H_(4))Cl_(3)]`

Answer» Correct Answer - C


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